This is the professional website of Howard Haber, Distinguished Professor of Physics at the University of California, Santa Cruz.
RECENT NEWS
December 1, 2023: The 2023 update of the review articles appearing
the Review of Particle Physics by the Particle Data Group
(PDG) is now published on the PDG web
site. Included among these
review articles is the newly revised Supersymmetry, Part I
(Theory), which is co-authored by myself and Ben Allanach.
November 10, 2023: Today, my paper in collaboration with Miguel Bento and Joao Silva, entitled Classes of complete dark photon models constrained by Z-physics, was posted on the arXiv. A link to this paper can be found in Section II of this website.
Dark Matter models that employ a vector portal to a dark sector are usually treated as an effective theory that incorporates kinetic mixing of the photon with a new U(1) gauge boson, with the Z boson integrated out. However, a more complete theory must employ the full SU(2)L×U(1)Y×U(1)Y' gauge group, in which kinetic mixing of the Z boson with the new U(1) gauge boson is taken into account. The importance of the more complete analysis is demonstrated by an example where the parameter space of the effective theory that yields the observed dark matter relic density is in conflict with a suitably defined electroweak ρ parameter that is deduced from a global fit to Z physics data.
October 30, 2023: Today, my paper entitled Higgs Boson Physics: The View Ahead was published in a special issue of Letters in High Energy Physics (LHEP) on Higgs physics, and beyond, after 10 years since the discovery. A link to this paper can be found in Section II of this website.
October 13, 2023: Today, my paper in collaboration with Miguel Bento and Joao Silva, entitled Tree-level Unitarity in SU(2)L×U(1)Y×U(1)Y' Models, was published in JHEP. A link to this paper can be found in Section II of this website.
In models with a U(1) gauge extension beyond the Standard Model, one can derive sum rules for the couplings of the theory that are a consequence of tree-level unitarity. In this paper, we provide a comprehensive list of coupling sum rules for a general SU(2)L×U(1)Y×U(1)Y' gauge theory coupled to an arbitrary set of fermion and scalar multiplets. For the case of a minimal extension of the Standard Model with a U(1)Y' gauge boson, the definitions of the weak mixing angle and the electroweak ρ parameter are clarified, and a generalized ρ parameter (denoted by ρ′) is defined. The latter naturally follows from the unitarity sum rules developed in this paper.
September 28, 2023: Today, my paper in collaboration with Joseph (Zippy) Connel and Pedro Ferreira, entitled Accommodating Hints of New Heavy Scalars in the Framework of the Flavor-Aligned Two-Higgs-Doublet Model, was published in Physical Review D. A link to this paper can be found in Section II of this website.
Searches for new neutral Higgs bosons of an extended Higgs sector at the LHC can be interpreted in the framework of the two-Higgs doublet model. By employing generic flavor-aligned Higgs–fermion Yukawa couplings, we propose an analysis that uses experimental data to determine whether flavor alignment is a consequence of a symmetry that is either exact or at most softly broken. We illustrate our proposal in two different scenarios based on a few 3 sigma (local) excesses observed by the ATLAS and CMS Collaborations in their searches for heavy scalars at Run 2 of the LHC.
September 13, 2023: My talk entitled Scalar revelations at future e+e- colliders, given at Scalars 2023 at the University of Warsaw in Warsaw, Poland, has been posted to Section VII of this website.
September 6, 2023: My talk entitled Signals of new heavy scalars in the flavor-aligned 2HDM, given at Higgs Days at Santander 2023, has been posted to Section VII of this website.
July 21, 2023: My talk entitled Supersymmetry Confronts a SM-Like Higgs Boson, given at the XXX International Conference on Supersymmetry and Unification of Fundamental Interactions (SUSY 2023)
, has been posted to Section VII of this website.July 13, 2023: Two lectures, entitled Supersymmetry and Higgs Physics were presented today at the pre-SUSY school 2023 at the University of Southampton in Southampton, England. This four day school precedes the The XXX International Conference on Supersymmetry and Unification of Fundamental Interactions (SUSY 2023), which will take place the following week. The lecture slides have been posted to Section VII of this website.
June 30, 2023: Physical copies of our textbook, From Spinors to
Supersymmetry, co-authored by Herbi K. Dreiner, Howard E. Haber and
Stephen P. Martin, have now arrived from the publisher. On the
following day, I made the ten-mile bike ride from the Aspen Center
for Physics to Maroon
Lake (elevation gain of 1700 ft.), which is one of my favorite bike
rides that I have done many times before. But, on this ride, I took
along a copy of the book in order to have the following photo taken:

June 7, 2023: The textbook, entitled From Spinors to Supersymmetry, co-authored by Herbi K. Dreiner, Howard E. Haber and Stephen P. Martin, is now officially published and available from Cambridge University Press. Click here for an overview. For further details on purchasing a copy, check out this link. It is also available from Amazon via the following link.
June 6, 2023: Today, my paper in collaboration with Miguel Bento and Joao Silva, entitled Tree-level Unitarity in SU(2)L×U(1)Y×U(1)Y' Models, was posted on the arXiv. A link to this paper can be found in Section II of this website.
In models with a U(1) gauge extension beyond the Standard Model, one can derive sum rules for the couplings of the theory that are a consequence of tree-level unitarity. In this paper, we provide a comprehensive list of coupling sum rules for a general SU(2)L×U(1)Y×U(1)Y' gauge theory coupled to an arbitrary set of fermion and scalar multiplets. For the case of a minimal extension of the Standard Model with a U(1)Y' gauge boson, the definitions of the weak mixing angle and the electroweak ρ parameter are clarified, and a generalized ρ parameter (denoted by ρ′) is defined. The latter naturally follows from the unitarity sum rules developed in this paper.
June 5, 2023: My talk entitled Signals of new heavy scalars in the flavor-aligned 2HDM, given at the 6th International Workshop on "Higgs as a Probe of New Physics" (HPNP2023), at Osaka University, in Osaka, Japan, has been posted to Section VII of this website.
May 28, 2023: My talk entitled My Journey through Physics with Marcela and Carlos, given at Beyond the SM from Colliders to the Early Universe: a symposium in honor of Marcela Carena and Carlos Wagner on the occasion of their 60th birthdays, at the University of Chicago in Chicago, IL USA, has been posted to Section VII of this website.
May 22, 2023: My talk entitled Higgs Boson Physics—The View Ahead, given at PLANCK 2023: The 25th International Conference from the Planck Scale to the Electroweak Scale, at the University of Warsaw in Warsaw, Poland, has been posted to Section VII of this website.
May 17, 2023: My talk entitled P-even, CP-violating Signals in ScalarMediated Processes, given at the International Workshop on Future Linear Colliders (LCWS2023), at SLAC National Accelerator Laboraotry in Menlo Park, CA USA, has been posted to Section VII of this website.
March 28, 2023: My talk entitled Adventures from spinors to SUSY, given at the "Herbi Fest"--Pursuing Physics Beyond the Standard Model: a symposium in honor of Herbi Dreiner on the occasion of his 60th birthday, at the Bethe Center for Theoretical Physics, University of Bonn, in Bonn, Germany, has been posted to Section VII of this website.
March 7, 2023: My presentation to Physics 205 can be found in Section V of this website.
February 28, 2023: Today, my paper in collaboration with Joseph (Zippy) Connel and Pedro Ferreira, entitled Accommodating Hints of New Heavy Scalars in the Framework of the Flavor-Aligned Two-Higgs-Doublet Model, was posted on the arXiv. A link to this paper can be found in Section II of this website.
Searches for new neutral Higgs bosons of an extended Higgs sector at the LHC can be interpreted in the framework of the two-Higgs doublet model. By employing generic flavor-aligned Higgs–fermion Yukawa couplings, we propose an analysis that uses experimental data to determine whether flavor alignment is a consequence of a symmetry that is either exact or at most softly broken. We illustrate our proposal in two different scenarios based on a few 3 sigma (local) excesses observed by the ATLAS and CMS Collaborations in their searches for heavy scalars at Run 2 of the LHC.
January 2, 2023: The 2023 Particle Physics conference schedule has been posted to Section VIII of this website. Although not intended to be comprehensive, it covers many conferences that overlap with my research interests.
December 18, 2022: Today I posted a short note to Section VI of this website entitled Exponentiating the Lie algebra of the Lorentz group. In one method, the 4x4 Lorentz transformation matrix (for arbitrary boost and rotation parameters) is obtained by an explict computation of the exponential of the corresponding element of the SO(1,3) Lie algebra. In a second method, the four-vector nature of the spinor product with a free spacetime index is used to to obtain the matrix Λ, which only requires the exponentiation of 2x2 matrices. The two methods are shown to yield the same expression for Λ.
Listings of older news items are stored
here.
I. Research
The basic themes underlying my research program involve the study of: (i) the dynamics responsible for electroweak symmetry breaking; (ii) the theory and phenomenology of Higgs bosons; (iii) TeV-scale supersymmetry as a framework for incorporating a weakly-coupled Higgs sector; (iv) the phenomenology of signals for new physics beyond the Standard Model at the Large Hadron Collider (LHC) and future colliders; and (v) connections of low-energy phenomena with fundamental scales that lie beyond the TeV scale (e.g. lepton number violation and implications for neutrino masses).
The properties of the Higgs boson, which were discovered in 2012 at the Large Hadron Collider (LHC). have profound implications for the dynamics of electroweak symmetry breaking and the possible structure of new physics that may lie beyond the Standard Model (SM) of particle physics. For example, most approaches to physics beyond the SM include extended Higgs sectors. Present Higgs data suggest that the properties of one of the scalars of the Higgs sector (identified with the observed Higgs boson) must have properties that closely approximate that of the SM Higgs boson. This constraint in turn imposes important constraints on any SM extension. The two-Higgs doublet model (2HDM) is a convenient theoretical laboratory for the study of extended Higgs sectors. Indeed, the two doublet extended Higgs sector is a key component of the simplest supersymmetric extension of the SM.
The theoretical structure and phenomenological profile of the 2HDM has attracted much attention in recent years. Staring with a seminal paper in collaboration with Sacha Davidson published in 2005, my work has advocated the importance of a basis-independent treatment of the 2HDM. During the past few years, I have focused on the relevance of the so-called decoupling and alignment limits of the 2HDM in which one of scalars closely resembles the SM Higgs boson. The basis-independent technology provides a very powerful and simple framework for studying and interpreting these limits.
If new physics beyond the SM emerges at the LHC, it will be essential
to develop techniques for measuring new particle interaction strengths at
high energy colliders. By detecting relations among various independent
couplings, one can ascertain underlying symmetries and distinguish
among different theoretical interpretations of the new physics. For example,
with sufficient precision, it will be possible to provide convincing
evidence for or against a supersymmetric interpretation of new
fundamental physics phenomena. A precision Higgs program at the LHC
and at a future collider (such as the proposed International Linear Collider)
can also provide important clues as to what may lie beyond the Standard Model.
II. Publications
All my profession publications can be found here on the INSPIRE HEP database.
Most of my professional publications since 1992 are stored on the e-print archive hosted by arXiv.org. PDF and Postscript versions of the stored papers can be found here. My top cited publications according to Google Scholar can be found here.
Links to my most recent preprints:
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Classes of complete dark photon models constrained by Z-Physics
Miguel P. Bento, Howard E. Haber, Joao P. Silva. Nov 10, 2023. 7 pp.
e-Print: arXiv:2311.04976 [hep-ph] | PDF
Links to my 2023 publications:
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Higgs Boson Physics: The View Ahead
Howard E. Haber (UC, Santa Cruz). July 24, 2023. 9 pp.
Published in Letters in High Energy Physics, LHEP-451 (2023)
DOI: 10.31526/LHEP.2023.451
Published version: [PDF]
e-Print: arXiv:2210.00449 [hep-ph] | PDF
References | BibTeX | LaTeX(US) | LaTeX(EU) | Harvmac | EndNote
Abstract and PDF from arXiv.org; Journal Server - LHEP
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Tree-level Unitarity in SU(2)L×U(1)Y×U(1)Y' Models
Miguel P. Bento, Howard E. Haber, Joao P. Silva. Jun 2, 2023. 28 pp.
Published in JHEP 10 (2023) 083
DOI: 10.1007/JHEP10(2023)083
Published version: [PDF]
e-Print: arXiv:2306.01836 [hep-ph] | PDF-
References
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Abstract and PDF from arXiv.org; Journal Server - JHEP
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Accommodating Hints of New Heavy Scalars in the Framework of the Flavor-Aligned Two-Higgs-Doublet Model
Joseph M. Connell, Pedro M. Ferreira, Howard E. Haber. Feb 27, 2023. 48 pp.
SCIPP-22/02
Published in Phys.Rev. D 108, 055031 (2023)
DOI: 10.1103/PhysRevD.108.055031
Published version: [PDF]
e-Print: arXiv: 2302.13697 [hep-ph] | PDF-
References
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Abstract and PDF from arXiv.org; Journal Server - Phys.Rev
Links to my 2022 publications:
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P-even, CP-violating Signals in Scalar-Mediated Processes
Howard E. Haber, Venus Keus, Rui Santos. Jun 20, 2022. 58 pp.
DIAS-STP-22-02 and SCIPP-22/01
Published in Phys.Rev. D 106, 095038 (2022)
DOI: 10.1103/PhysRevD.106.095038
Published version: [PDF]
e-Print: arXiv:2206.09643 [hep-ph] | PDF-
References
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Abstract and PDF from arXiv.org; Journal Server - Phys.Rev
Links to my 2021 publications:
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Exceptional regions of the 2HDM parameter space
Howard E. Haber, Joao P. Silva. Feb 14, 2021. 97 pp.
CFTP/21-001 and SCIPP-21/01
Published in Phys.Rev. D 103, 115012 (2021), Erratum-ibid. D105 (2022) 119902
DOI: 10.1103/PhysRevD.103.115012, 10.1103/PhysRevD.105.119902
Published version: [PDF] [Erratum]
e-Print: arXiv:2102.07136 [hep-ph] | PDF-
References
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Abstract and PDF from arXiv.org; Journal Server - Phys.Rev
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A natural mechanism for approximate Higgs alignment in the 2HDM
Patrick Draper, Andreas Ekstedt, Howard E. Haber. Nov 26, 2020. 51 pp.
SCIPP-20/03
Published in JHEP 05 (2021) 235
DOI: 10.1007/JHEP05(2021)235
Published version: [PDF]
e-Print: arXiv:2011.13159 [hep-ph] | PDF-
References
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Abstract and PDF from arXiv.org; Journal Server - JHEP
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A tale of three diagonalizations
Howard E. Haber. Sep 6, 2020. 27 pp.
Published in Int.J.Mod.Phys. A36 (2021) 2130002
DOI: 10.1142/S0217751X21300027
Published version: [PDF]
e-Print: arXiv:2009.03990 [hep-ph] | PDF-
References
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Abstract and PDF from arXiv.org; Journal Server - Int.J.Mod.Phys.
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Useful relations among the generators in the defining and adjoint representations of SU(N)
Howard E. Haber. Dec 31, 2019. 11 pp.
Published in SciPost Phys. Lect. Notes 21 (2021)
DOI: 10.21468/SciPostPhysLectNotes.21
Published version: [PDF]
e-Print: arXiv:1912.13302 [math-ph] | PDF-
References
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Abstract and PDF from arXiv.org
Links to my 2020 publications:
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Basis-independent treatment of the complex 2HDM
Rafael Boto, Tiago V. Fernandes, Howard E. Haber, Jorge C. Romao, Joao P. Silva. Jan 6, 2020. 65 pp.
CFTP/19-032 and SCIPP-19/01
Published in Phys.Rev. D 101, 055023 (2020)
DOI: 10.1103/PhysRevD.101.055023
Published version: [PDF]
e-Print: arXiv:2001.01430 [hep-ph] | PDF-
References
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Abstract and PDF from arXiv.org; Journal Server - Phys.Rev
Links to my 2019 publications:
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Symmetries and Mass Degeneracies in the Scalar Sector
Howard E. Haber, O.M. Ogreid, P. Osland, M.N. Rebelo. Aug 26, 2018. 43 pp.
SCIPP-18/04
Published in JHEP 01 (2019) 042
DOI: 10.1007/JHEP01(2019)042
Published version: [PDF]
e-Print: arXiv:1808.08629 [hep-ph] | PDF-
References
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Abstract and
PDF from
arXiv.org; Journal Server
- JHEP
Links to my 2018 publications:
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Heavy Higgs boson decays in the alignment limit of the 2HDM
Bohdan Grzadkowski, Howard E. Haber, Odd Magne Ogreid, Per Osland. Aug 4, 2018. 44 pp.
SCIPP-18/05
Published in JHEP 12 (2018) 056
DOI: 10.1007/JHEP12(2018)056
Published version: [PDF]
e-Print: arXiv:1808.01472 [hep-ph] | PDF-
References
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Abstract and PDF from arXiv.org; Journal Server - JHEP
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Multi-Higgs doublet models: the Higgs-fermion couplings and their sum rules
Miguel P. Bento, Howard E. Haber, J.C. Romao, Joao P. Silva. Aug 21, 2018. 24 pp.
SCIPP-18/06
Published in JHEP 10 (2018) 143
DOI: 10.1007/JHEP10(2018)143
Published version: [PDF]
e-Print: arXiv:1808.07123 [hep-ph] | PDF-
References
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Abstract and
PDF from
arXiv.org; Journal Server
- JHEP
Links to my 2017 publications:
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Multi-Higgs doublet models: physical parametrization, sum rules and unitarity bounds
Miguel P. Bento, Howard E. Haber, J.C. Romao, Joao P. Silva. Aug 30, 2017. 66 pp.
CFTP-17-005, SCIPP-17/10
Published in JHEP 11 (2017) 095
DOI: 10.1007/JHEP11(2017)095
Published version: [PDF]
e-Print: arXiv:1708.09408 [hep-ph] | PDF-
References
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Abstract and PDF from arXiv.org; Journal Server - JHEP
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The Impact of Two-Loop Effects on the Scenario of MSSM Higgs Alignment without Decoupling
Howard E. Haber, Sven Heinemeyer, Tim Stefaniak. Aug 15, 2017. 31 pp.
IFT-UAM-CSIC-17-074, SCIPP-17/09
Published in Eur.Phys.J. C77 (2017) 742
DOI: 10.1140/epjc/s10052-017-5243-5
Published version: [PDF]
e-Print: arXiv:1708.04416 [hep-ph] | PDF-
References
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Abstract and PDF from arXiv.org; Journal Server - Eur.Phys.J.C.
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High scale flavor alignment in two-Higgs doublet models and its phenomenology
Stefania Gori, Howard E. Haber, Edward Santos. Mar 16, 2017. 39 pp.
SCIPP-17/00
Published in JHEP 06 (2017) 110
DOI: 10.1007/JHEP06(2017)110
Published version: [PDF]
e-Print: arXiv:1703.05873 [hep-ph] | PDF-
References
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Abstract and Postscript and PDF from arXiv.org; Journal Server - JHEP
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The Light and Heavy Higgs Interpretation of the MSSM
Philip Bechtle, Howard E. Haber, Sven Heinemeyer, Oscar Stål, Tim Stefaniak, Georg Weiglein, Lisa Zeune. Aug 1, 2016. 63 pp.
BONN-TH-2016-06, DESY-16-151, IFT-UAM-CSIC-16-068, NIKHEF-2016-033, SCIPP-16-10
Published in Eur.Phys.J. C77 (2017) 67
DOI: 10.1140/epjc/s10052-016-4584-9
Published version: [PDF]
e-Print: arXiv:1608.00638 [hep-ph] | PDF-
References
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Abstract and PDF from arXiv.org; Journal Server - Eur.Phys.J.C.
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Links to my 2016 publications:
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Perturbation Theory in Supersymmetric QED: Infrared Divergences and Gauge Invariance
Michael Dine, Patrick Draper, Howard E. Haber, Laurel Stephenson Haskins. Jul 23, 2016. 28 pp.
SCIPP-16/08
Published in Phys.Rev. D94 (2016) 095003
DOI: 10.1103/PhysRevD.94.095003
Published version: [PDF]
e-Print: arXiv:1607.06995 [hep-th] | PDF-
References
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Abstract and PDF from arXiv.org; Journal Server - Phys.Rev
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References
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Partially Natural Two Higgs Doublet Models
Patrick Draper, Howard E. Haber, Joshua T. Ruderman. May 10, 2016. 31 pp.
SCIPP-16/06 and NSF-KITP-16-04
Published in JHEP 06 (2016) 124
DOI: 10.1007/JHEP06(2016)124
Published version: [PDF]
e-Print: arXiv:1605.03237 [hep-ph] | PDF-
References
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Abstract and PDF from arXiv.org; Journal Server - JHEP
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Scrutinizing the Alignment Limit in Two-Higgs-Doublet Models. Part 2: mH=125 GeV
Jérémy Bernon (LPSC, Grenoble), John F. Gunion (UC, Davis (main)), Howard E. Haber (UC, Santa Cruz, Inst. Part. Phys.), Yun Jiang (UC, Davis & Bohr Inst. & Copenhagen U.), Sabine Kraml (LPSC, Grenoble). Nov 11, 2015. 43 pp.
LPSC15274, UCD-2015-002, SCIPP-15/13
Published in Phys.Rev. D93 (2016) 035027
DOI: 10.1103/PhysRevD.93.035027
Published version: [PDF]
e-Print: arXiv:1511.03682 [hep-ph] | PDF-
References
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Abstract and PDF from arXiv.org; Journal Server - Phys.Rev
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On the Alignment Limit of the NMSSM Higgs Sector
Marcela Carena, Howard E. Haber, Ian Low, Nausheen R. Shah, Carlos E. M. Wagner. Oct 30, 2015. 60 pp.
EFI-15-32, FERMILAB-PUB-15-407-T, MCTP-15-15, SCIPP 15/12, WSU-HEP-1505
Published in Phys.Rev. D93 (2016) 035013
DOI: 10.1103/PhysRevD.93.035013
Published version: [PDF]
e-Print: arXiv:1510.09137 [hep-ph] | PDF-
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Abstract and PDF from arXiv.org; Journal Server - Phys.Rev
Links to my 2015 publications:
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New LHC Benchmarks for the CP-conserving Two-Higgs-Doublet Model
Howard E. Haber, Oscar Stål. July 15, 2015. 37 pp.
SCIPP-15-10
Published in Eur.Phys.J. C75 (2015) 491, Erratum-ibid. C76 (2016) 312
DOI: 10.1140/epjc/s10052-015-3697-x, 10.1140/epjc/s10052-016-4151-4
Published version: [PDF] [Erratum]
e-Print: arXiv:1507.04281 [hep-ph] | PDF-
References
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Abstract and PDF from arXiv.org; Journal Server - Eur.Phys.J.C.; Journal Server - Erratum-ibid.
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Scrutinizing the Alignment Limit in Two-Higgs-Doublet Models. Part 1: mh = 125 GeV
Jérémy Bernon, John F. Gunion, Howard E. Haber, Yun Jiang, Sabine Kraml. July 3, 2015. 48 pp.
LPSC15154, UCD-2015-001, SCIPP-15/08
Published in Phys.Rev. D92 (2015) 075004
DOI: 10.1103/PhysRevD.92.075004
Published version: [PDF]
e-Print: arXiv:1507.00933 [hep-ph] | PDF-
References
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Abstract and PDF from arXiv.org; Journal Server - Phys.Rev
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Preserving the validity of the Two-Higgs Doublet Model up to the Planck scale
Pedro Ferreira (Lisbon, ISEL & Lisbon U., CFTC), Howard E. Haber, Edward Santos (UC, Santa Cruz). May 15, 2015. 36 pp.
SCIPP-15-07
Published in Phys.Rev. D92 (2015) 033003, Erratum-ibid. D94 (2016) 059903
DOI: 10.1103/PhysRevD.92.033003, 10.1103/PhysRevD.94.059903
Published version: [PDF] [Erratum]
e-Print: arXiv:1505.04001 [hep-ph] | PDF-
References
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Abstract and Postscript and PDF from arXiv.org; Journal Server - Phys.Rev.; Journal Server - Erratum-ibid.
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Complementarity Between Non-Standard Higgs Boson Searches and Precision Higgs Boson Measurements in the MSSM
Marcela Carena, Howard E. Haber, Ian Low, Nausheen R. Shah, Carlos E. M. Wagner. Oct 18, 2014. 43 pp.
EFI-14-36, FERMILAB-PUB-14-392-T, MCTP-14-37, SCIPP-14-16
Published in Phys.Rev. D91 (2015) 035003
DOI: 10.1103/PhysRevD.91.035003
Published version: [PDF]
e-Print: arXiv:1410.4969 [hep-ph] | PDF-
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Abstract and Postscript and PDF from arXiv.org; Journal Server - Phys.Rev.
Links to Conference proceedings, 2013--2022:
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A natural mechanism for a SM-like Higgs boson in the 2HDM without decoupling
Howard E. Haber. May 17, 2022. 15 pp.
Invited talk at DISCRETE 2020-2021: 7th Symposium on Prospects in the Physics of Discrete Symmetries, November 29--December 3, 2021
Published in PoS(DISCRETE2020-2021)010
Published version: [PDF]
e-Print: arXiv:2205.07578 [hep-ph] | PDF-
References
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Abstract and PDF from arXiv.org
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Approximate Higgs alignment without decoupling
Howard E. Haber. May 15, 2018. 4 pp.
SCIPP 18/03.
Contribution to the Proceedings of the 53th Rencontres de Moriond, QCD Session, 17--24 March 2018
e-Print: arXiv:1805.05754 [hep-ph] | PDF-
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Abstract Service
Abstract and PDF from arXiv.org
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Future Higgs Studies: A Theorist's Outlook
Howard E. Haber. Jan 8, 2017. 12 pp.
Invited talk at Charged 2016: Prospects for Charged Higgs Discovery at Colliders, 3--6 October 2016
Published in PoS(CHARGED2016)029
Published version: [PDF]
e-Print: arXiv:1701.01922 [hep-ph] | PDF-
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Abstract and Postscript and PDF from arXiv.org; INSPIRE HEP Conference database listing [Conference C16-10-03.1 | Contributions]; Journal Server - Proceedings of Science
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The Higgs data and the Decoupling Limit
Howard E. Haber. Dec 31, 2013. 15 pp.
SCIPP-13-15.
Published in the Proceedings of the Toyama International Workshop on Higgs as a Probe of New Physics 2013 (HPNP2013) on eConf
e-Print: arXiv:1401.0152 [hep-ph] | PDF-
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Abstract and Postscript and PDF from arXiv.org; INSPIRE HEP Conference database listing [Conference C13-02-13.1 | Contributions]
Thirteen selected publications published from 2003--2014 are listed below.
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Probing wrong-sign Yukawa couplings at the LHC and a future linear collider
P.M. Ferreira, John F. Gunion, Howard E. Haber, Rui Santos. Mar 19, 2014. 24 pp.
SCIPP-14-02, UCD-2014-2
Published in Phys.Rev. D89 (2014) 115003
DOI: 10.1103/PhysRevD.89.115003
Published version: [PDF]
e-Print: arXiv:1403.4736 [hep-ph] | PDF-
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ADS Abstract Service
Abstract and Postscript and PDF from arXiv.org; Journal Server - Phys.Rev.
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Decoupling of the Right-handed Neutrino Contribution to the Higgs Mass in Supersymmetric Models
Patrick Draper, Howard E. Haber. Apr 22, 2013. 27 pp.
SCIPP-13-04.
Published in Eur.Phys.J. C73 (2013) 2522
DOI: 10.1140/epjc/s10052-013-2522-7
Published version: [PDF]
e-Print: arXiv:1304.6103 [hep-ph] | PDF-
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Abstract and PDF from arXiv.org; Journal Server - Eur.Phys.J.C.
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Mass-degenerate Higgs bosons at 125 GeV in the Two-Higgs-Doublet Model.
P.M. Ferreira, Howard E. Haber, Rui Santos, Joao P. Silva. Nov 2012. 17 pp.
SCIPP-12-14.
Published in Phys.Rev. D87 (2013) 055009
DOI: 10.1103/PhysRevD.87.055009
Published version: [PDF]
e-Print: arXiv:1211.3131 [hep-ph] | PDF-
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Abstract and Postscript and PDF from arXiv.org; Journal Server - Phys.Rev.
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Group-theoretic Condition for Spontaneous CP Violation.
Howard E. Haber (UC, Santa Cruz), Ze'ev Surujon (UC, Irvine). Jan 2012. 25 pp.
SCIPP-12-01, UCI-TR-2012-01.
Published in Phys.Rev. D86 (2012) 075007
DOI: 10.1103/PhysRevD.86.075007
Published version: [PDF]
e-Print: arXiv:1201.1730 [hep-ph] PDF-
References
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Abstract and Postscript and PDF from arXiv.org; Journal Server - Phys.Rev.
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Basis-independent methods for the two-Higgs-doublet model III: The CP-conserving limit, custodial symmetry, and the oblique parameters S, T, U.
Howard E. Haber, Deva O'Neil (UC, Santa Cruz). Nov 2010. 58 pp.
SCIPP-10-18.
Published in Phys.Rev. D83 (2011) 055017
DOI: 10.1103/PhysRevD.83.055017
Published version: [PDF]
e-Print: arXiv:1011.6188 [hep-ph]-
References
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Abstract and Postscript and PDF from arXiv.org; Journal Server - Phys.Rev.
Supersymmetric Monojets at the Large Hadron Collider.
Benjamin C. Allanach (Cambridge U., DAMTP), Sebastian Grab, Howard E. Haber (UC, Santa Cruz). Oct 2010. 42 pp.
DAMTP-2010-83, SCIPP-10-16.
Published in JHEP 01 (2011) 138, Erratum-ibid. 07 (2011) 087, Erratum-ibid. 09 (2011) 027
DOI: 10.1007/JHEP01(2011)138, 10.1007/JHEP07(2011)087, 10.1007/JHEP09(2011)027
Published version: [PDF] [Erratum 1] [Erratum 2]
e-Print: arXiv:1010.4261 [hep-ph]-
References
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Abstract and Postscript and PDF from arXiv.org; Journal Server - JHEP; Journal Server - Erratum-ibid.; Journal Server - Erratum-ibid.
Generalized CP symmetries and special regions of parameter space in the two-Higgs-doublet model
P.M. Ferreira (Lisbon, ISEL & Lisbon, IST), Howard E. Haber (UC, Santa Cruz), Joao P. Silva (Lisbon, ISEL & Lisbon, IST). Feb 2009. 20 pp.
Published in Phys.Rev. D79 (2009) 116004
DOI: 10.1103/PhysRevD.79.116004
Published version: [PDF]
e-Print: arXiv:0902.1537 [hep-ph] | PDF-
References
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Abstract and PDF from arXiv.org; Journal Server - Phys.Rev
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Hard supersymmetry-breaking 'wrong-Higgs' couplings of the MSSM.
Howard E. Haber, John D. Mason (UC, Santa Cruz). Nov 2007. 32 pp.
SCIPP-07-16.
Published in Phys.Rev. D77 (2008) 115011
DOI: 10.1103/PhysRevD.77.115011
Published version: [PDF]
e-Print: arXiv:0711.2890 [hep-ph]-
References
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Abstract and Postscript and PDF from arXiv.org; Journal Server - Phys.Rev.
Seesaw mechanism in the sneutrino sector and its consequences.
Athanasios Dedes (Durham U., IPPP & Ioannina U.), Howard E. Haber (UC, Santa Cruz), Janusz Rosiek (Durham U., IPPP & Warsaw, CFT). Jul 2007. 63 pp.
IPPP-07-16,CPT-07-32, SCIPP-07-10.
Published in JHEP 11 (2007) 059
DOI: 10.1088/1126-6708/2007/11/059
Published version: [PDF]
e-Print: arXiv:0707.3718 [hep-ph]-
References
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Abstract and Postscript and PDF from arXiv.org; Journal Server - JHEP; JHEP Electronic Journal Server
Basis-independent methods for the two-Higgs-doublet model. II. The Significance of tan beta.
Howard E. Haber, Deva O'Neil (UC, Santa Cruz, Inst. Part. Phys.). Feb 2006. 48 pp.
SCIPP-06-01.
Published in Phys.Rev. D74 (2006) 015018, Erratum-ibid. D74 (2006) 059905
DOI: 10.1103/PhysRevD.74.015018, 10.1103/PhysRevD.74.059905
Published version: [PDF] [Erratum]
e-Print: hep-ph/0602242 | PDF-
References
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Abstract and Postscript and PDF from arXiv.org; Journal Server - Phys.Rev.
Conditions for CP-violation in the general two-Higgs-doublet model
John F. Gunion (UC, Davis (main)), Howard E. Haber (UC, Santa Cruz, Inst. Part. Phys.). Jun 2005. 46 pp.
Published in Phys.Rev. D72 (2005) 095002
SCIPP-04-16, UCD-2004-29
DOI: 10.1103/PhysRevD.72.095002
Published version: [PDF]
e-Print: hep-ph/0506227 | PDF-
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Abstract and Postscript and PDF from arXiv.org; Journal Server - Phys.Rev. -
Basis-independent methods for the two-Higgs-doublet model
Sacha Davidson (Durham U., IPPP & Lyon, IPN), Howard E. Haber (Durham U., IPPP & UC, Santa Cruz). Apr 2005. 45 pp.
IPPP-03-23, DCPT-03-46, SCIPP-04-15.
Published in Phys.Rev. D72 (2005) 035004, Erratum-ibid. D72 (2005) 099902
DOI: 10.1103/PhysRevD.72.035004, 10.1103/PhysRevD.72.099902
Published version: [PDF] [Erratum]
e-Print: hep-ph/0504050 | PDF-
References
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Abstract and Postscript and PDF from arXiv.org; Phys. Rev. D Server -
The CP conserving two Higgs doublet model: The Approach to the decoupling limit
John F. Gunion (UC, Davis), Howard E. Haber (UC, Santa Cruz). Jul 2002. 42 pp.
SCIPP-02-10.
Published in Phys.Rev. D67 (2003) 075019
DOI: 10.1103/PhysRevD.67.075019
Published version: [PDF]
e-Print: hep-ph/0207010 | PDF-
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Abstract and Postscript and PDF from arXiv.org; Phys. Rev. D Server
My two most highly cited papers (not including reviews) are listed below.
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Can the mass of the lightest Higgs boson of the minimal supersymmetric model be larger than m(Z)?
Howard E. Haber, Ralf Hempfling (UC, Santa Cruz). Nov 1990. 12 pp.
Published in Phys.Rev.Lett. 66 (1991) 1815-1818
SCIPP-90-42
DOI: 10.1103/PhysRevLett.66.1815
Published version: [PDF]
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Higgs Bosons in Supersymmetric Models. 1.
J.F. Gunion (UC, Davis), Howard E. Haber (UC, Santa Cruz & SLAC). Aug 1984. 111 pp.
Published in Nucl.Phys. B272 (1986) 1, Erratum-ibid. B402 (1993) 567-569
SLAC-PUB-3404.
DOI: 10.1016/0550-3213(86)90340-8; 10.1016/0550-3213(93)90653-7
Published version: [PDF] [Erratum]
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CERN Library Record ; SLAC Document Server; Journal Server - Nuclear Physics B; . Journal Server - Erratum-ibid.
Articles on the Higgs boson meant for a broader audience can be found below.
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Higgs Boson Physics -- The View Ahead
Howard E. Haber (UC, Santa Cruz). Oct 4, 2022. 8 pp.
Published in the September 2022 issue of the CERN EP Newsletter of the EP department
URL: https://ep-news.web.cern.ch/content/higgs-boson-physics-view-ahead
Viewpoint: Higgs Decay into Bottom Quarks Seen at Last
Howard E. Haber (UC, Santa Cruz). Sept 2018.
Published in Physics 11 (2018) 91
DOI: 10.1103/Physics.11.91
Published version: [PDF]
Viewpoint: Homing in on the Higgs Boson
Howard E. Haber (UC, Santa Cruz). Mar 2012.
Published in Physics 5 (2012) 32
DOI: 10.1103/Physics.5.32
Published version: [PDF]
References | BibTeX | LaTeX(US) | LaTeX(EU) | Harvmac | EndNote
Journal Server - Physics
- The Higgs boson explained in 60 seconds
Howard E. Haber (UC, Santa Cruz). Aug. 2006.
Published in Symmetry Magazine, volume 3, issue 6 (August, 2006)
URL: https://www.symmetrymagazine.org/article/august-2006/60-seconds-higgs-boson
Published version: [PDF]
III. Published Reviews
Supersymmetry, Part I (Theory).
Benjamin C. Allanach (Cambridge U., DAMTP), Howard E. Haber (UC, Santa Cruz). Aug. 2021. 42 pp.
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PDF
from the 2022 edition and 2023 update of the Review of Particle Physics
Review of Particle Physics (RPP)
Particle Data Group Collaboration (R.L. Workman (George Washington University) et al.). August 2022. 2270 pp.
Published in PTEP 2022 (2022) 083C01
DOI: 10.1093/ptep/ptac097
Published version: [PDF]
Particle Data Group (PDG) webpage: [HTML]
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References
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Link to Fulltext
Higgs-mass predictions in the MSSM and beyond
P. Slavich, S. Heinemeyer, E. Bagnaschi, H. Bahl, M. Goodsell, H.E. Haber, et al. Dec 31, 2020. 83 pp.
DESY 20-229, DESY-20-229, IFT-UAM/CSIC-20-184, FR-PHENO-2020-021, KA-TP-23-2020, MPP-2020-235, KA-TP-23-2020, MPP-2020-235, P3H-20-086, TTK-20-53
Published in Eur.Phys.J. C81 (2021) 450
DOI: 10.1140/epjc/s10052-021-09198-2
Published version: [PDF]
e-Print: arXiv:2012.15629 [hep-ph] | PDF-
References
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CERN Document Server; ADS Abstract Service; Link to Article from SCOAP3
Abstract and PDF from arXiv.org
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Supersymmetric Theory and Models
Howard E. Haber, Laurel Stephenson Haskins. Dec 16, 2017. 144 pp.
SCIPP-17-11
Conference: C16-06-06.15, pp. 355--499 Proceedings
Published in Chapter 6 of TASI 2016: Anticipating the Next Discoveries in Particle Physics, edited by Rouven Essig and Ian Low (World Scientific, Singapore, 2018).
DOI: 10.1142/9789813233348_0006
e-Print: arXiv:1712.05926 [hep-ph] | PDF-
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Abstract and PDF from arXiv.org
- ILC Higgs White Paper
D.M. Asner, T. Barklow, C. Calancha, K. Fujii, N. Graf, H.E. Haber, A. Ishikawa, S. Kanemura, S. Kawada, M. Kurata et al.. Oct 23, 2013. 152 pp.
e-Print: arXiv:1310.0763 [hep-ph] | PDF-
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Abstract and PDF from arXiv.org - ILC Higgs White Paper
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Geometric picture of generalized-CP and Higgs-family transformations in the two-Higgs-doublet model.
P.M. Ferreira (Lisbon, ISEL & Lisbon, IST), Howard E. Haber (UC, Santa Cruz), M. Maniatis (Heidelberg U.), O. Nachtmann (Heidelberg U.), Joao P. Silva (Lisbon, ISEL & Lisbon, IST). Oct 2010. 31 pp.
SCIPP-10-15, HD-THEP-10-1.
Published in Int.J.Mod.Phys. A26 (2011) 769-808
DOI: 10.1142/S0217751X11051494
Published version: [PDF]
e-Print: arXiv:1010.0935 [hep-ph]-
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Abstract and Postscript and PDF from arXiv.org; Journal Server - Int.J.Mod.Phys.
Two-component spinor techniques and Feynman rules for quantum field theory and supersymmetry.
Herbi K. Dreiner, Howard E. Haber, Stephen P. Martin. Dec 2008. 246 pp.
BN-TH-2008-12, SCIPP-08-08.
Published in Phys.Rept. 494 (2010) 1-196
DOI: 10.1016/j.physrep.2010.05.002
Published version: [PDF]
Corrected version of the published review with a few enhancements, with the mostly minus metric [PDF]
Corrected version of the published review with a few enhancements, with the mostly plus metric [PDF]
e-Print: arXiv:0812.1594 [hep-ph]-
References
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Abstract and Postscript and PDF from arXiv.org; Journal Server - Phys.Rept.Webpage for Two-component spinor techniques and Feynman rules for quantum field theory and supersymmetry, maintained by Stephen P. Martin. Both the arXiv version and the Physics Reports version use the spacetime metric signature (+1,-1,-1,-1), as is found for example in the field theory textbooks by Ramond, and by Peskin and Schroeder . However, many people including one of the authors (S.P. Martin) prefer the metric signature (-1, +1, +1, +1), as is found for example in the textbooks by Weinberg, by Wess and Bagger, by Srednicki, and in Martin's Supersymmetry Primer. Here is a PDF file of v6 of our review with the (-1, +1, +1, +1) metric convention, which should be identical in content in every other respect: DHMspinors_v6.pdf.
Both the (+1,-1,-1,-1) and the (-1, +1, +1, +1) metric versions were made from the same source files available from the arXiv. The choice of metric signature is implemented by simply changing a single character in the main LaTeX source file, namely the argument of line 20, with \def\signofmetric{0} corresponding to the (+1,-1,-1,-1) metric and \def\signofmetric{1} to the (-1, +1, +1, +1) metric. Note that the pdf file is produced with pdflatex.
The list of known corrections to the Physics Reports version as of May 2022 is here: DHM_corr_PhysicsReports.pdf.
These corrections have all been implemented (along with some additional enhancements) and can be found in version 6 of arXiv:0812.1594 (313 pages, May 2022). Any subsequent corrections to version 6 of arXiv:0812.1594 will be posted on https://www.niu.edu/spmartin/spinors/.
Higgs boson theory and phenomenology.
Marcela Carena (Fermilab), Howard E. Haber (UC, Santa Cruz). Aug 2002. 87 pp.
hep-ph/0208209,FERMILAB-PUB-02-114-T, SCIPP-02-07.
Published in Prog.Part.Nucl.Phys. 50 (2003) 63-152
DOI: 10.1016/S0146-6410(02)00177-1
Published version: [PDF]
e-Print: hep-ph/0208209-
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Abstract and Postscript and PDF from arXiv.org; Journal Server - Prog.Part.Nucl.Phys.; ADS Abstract Service; CERN Library Record ; Fermilab Library Server (fulltext available); Science Direct; WORLDSCI
Spin formalism and applications to new physics searches.Postscript and PDF from this website.
Howard E. Haber (UC, Santa Cruz & Santa Barbara, KITP). Apr 1994. 83 pp.
hep-ph/9405376, SCIPP-93-49, NSF-ITP-94-30, C93-07-26.
Published in Stanford 1993, Spin structure in high energy processes, pp. 231-272
Presented at Conference: C93-07-26
e-Print: hep-ph/9405376-
References
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Abstract from arXiv.org; KEK scanned document ; CERN Library Record
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Lectures on electroweak symmetry breaking.PDF from this website.
Howard E. Haber (UC, Santa Cruz). Mar 1991. 136 pp.
SCIPP-91-06
Invited lectures given at Conference: C90-06-03 (Boulder TASI 90:340-475), p.340-475
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The Search for Supersymmetry: Probing Physics Beyond the Standard Model.
Howard E. Haber (UC, Santa Cruz & SLAC), Gordon L. Kane (Michigan U.). Jan 1984. 376 pp.
UM-HE-TH-83-17, SCIPP-85-47.
Published in Phys.Rept. 117 (1985) 75-263
DOI: 10.1016/0370-1573(85)90051-1
Published version: [PDF] [Erratum]-
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Journal Server - Phys.Rept.; KEK scanned document
IV. Published Books
Co-authored books
From Spinors to Supersymmetry.
Herbi K. Dreiner, Howard E. Haber, Stephen P. Martin. Jun 2023. 1009 pp.
Links to From Spinors to Supersymmetry at the Cambridge University Press webpage: [Overview | Hardback | eBook]
Link to Resources and Errata
The book can also be purchased from Amazon via the following link.
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The Higgs Hunter's Guide.
John F. Gunion (UC, Davis), Howard E. Haber (UC, Santa Cruz), Gordon L. Kane (Michigan U.), Sally Dawson (Brookhaven). Jun 1989. 404 pp.
SCIPP-89/13, UCD-89-4, BNL-41644.
Published in Front. Phys. 80 (2000) 1-448
Link to The Higgs Hunter's Guide at the Perseus Books webpage. See also the Routledge (member of Taylor & Francis Group) webpage.
Errata for The Higgs hunter's guide.
John F. Gunion (UC, Davis), Howard E. Haber (UC, Santa Cruz), Gordon L. Kane (Michigan U.), Sally Dawson (Brookhaven). Dec 1992. 5 pp.
hep-ph/9302272, SCIPP-92-58.
e-Print: hep-ph/9302272-
References
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Abstract and Postscript and PDF from arXiv.org
Edited books
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Particle physics and cosmology: The quest for physics beyond the standard model(s). Proceedings, Theoretical Advanced Study Institute, TASI 2002, Boulder, USA, June 3-28, 2002.
H.E. Haber, (ed.) (UC, Santa Cruz), A.E. Nelson, (ed.) (Washington U., Seattle). 2004. 892 pp.
ISBN-9789812388926.
Prepared for Conference: C02-06-02.1 (River Edge, USA: World Scientific (2004) 892 p)
Link to Particle Physics and Cosmology webpage at World Scientific Publishing.
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Electroweak symmetry breaking and new physics at the TeV scale.
T.L. Barklow, (ed.) (SLAC), S. Dawson, (ed.) (Brookhaven), H.E. Haber, (ed.) (UC, Santa Cruz), J.L. Siegrist, (ed.) (LBL, Berkeley). 1996.
Published in Singapore, Singapore: World Scientific (1996) 736 p. (Advanced series on directions in high energy physics. 16)Link to Electroweak Symmetry Breaking and New Physics at the TeV Scale webpage at World Scientific Publishing.
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From The Planck Scale To The Weak Scale: Toward A Theory Of The Universe. Proceedings, Theoretical Advanced Study Institute In Elementary Particle Physics, Santa Cruz, Usa, June 23 - July 18, 1986. Vol. 2.
H.E. Haber, (Ed.). 1987.
Published in SINGAPORE, SINGAPORE: WORLD SCIENTIFIC (1987) 497-953Link to From the Planck Scale to the Weak Scale: Toward a Theory of the Universe webpage at World Scientific Publishing.
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From The Planck Scale To The Weak Scale: Toward A Theory Of The Universe. Proceedings, Theoretical Advanced Study Institute In Elementary Particle Physics, Santa Cruz, Usa, June 23 - July 18, 1986. Vol. 1.
H.E. Haber, (Ed.). 1987.
Published in SINGAPORE, SINGAPORE: WORLD SCIENTIFIC (1987) 1-495Link to From the Planck Scale to the Weak Scale: Toward a Theory of the Universe webpage at World Scientific Publishing.
V. Teaching
- Spring, 2023 Physics 251 Group Theory and Modern Physics
- Winter, 2023 Physics 214 Electromagnetism II
- Winter, 2023 Physics 205 Introduction to Research "Research on the Theory of the Terascale" [PDF | Powerpoint]
- Spring, 2020 Physics 222 Quantum Field Theory III
- Fall, 2019 Physics 116A Mathematical Methods in Physics I
- Winter, 2018 Physics 215 Introduction to Non-Relativistic Quantum Mechanics
- Fall 2016 Physics 217 Quantum Field Theory I
- Winter 2016 Physics 218 Quantum Field Theory II
- Fall, 2015 Physics 171 General Relativity, Black Holes, and Cosmology
- Fall, 2012 Physics 116C Mathematical Methods in Physics III
- Spring, 2012 Physics 216 Advanced Topics in Non-Relativistic Quantum Mechanics
- Fall, 2009 Physics 139B Quantum Mechanics II
- Winter, 2009 Physics 5B Introduction to Physics II
- Winter, 2000 Physics 112 Thermodynamics and Statistical Mechanics
VI. Notes and other writings
- Exponentiating the Lie algebra of the Lorentz group [PDF | PS]
- Rational approximations to ln 2 short version: [PDF | PS]; long version: [PDF | PS]
- Generalized Functions for Physics [PDF | PS]
- Evaluating the finite part of the Passarino-Veltman function B0(p2;m12,m22) [PDF | PS]
- Evaluating the one-loop function arising in h→γγ [PDF | PS]
- Analytic formulae for the Feynman propagator in coordinate space [PDF | PS]
- A Tale of Three Diagonalizations [PDF | PS]
- Notes on the Matrix Exponential and Logarithm [PDF | PS]
- What is the group of conjugate symplectic matrices? [PDF | PS]
- Parameterization of real orthogonal antisymmetric matrices [PDF | PS]
- Toward a set of 2HDM benchmarks [PDF | PS]
- The eigenvalues of the quadratic Casimir operator and second-order indices of a simple Lie algebra [PDF | PS]
- Notes on basis changes and matrix diagonalization [PDF | PS]
- Notes on the complex inverse trigonometric and hyperbolic functions and their principal values [PDF | PS]
- Electron wave function and mass renormalization in QED [PDF | PS]
- Proof of a trace inequality in matrix algebra [PDF | PS]
- Notes on the spontaneous breaking of SU(N) and SO(N) via a second-rank tensor multiplet [PDF | PS]
- Notes on antisymmetric matrices and the pfaffian [PDF | PS]
- Complex representation of scalar fields and the embedding of U(n) in SO(2n) [PDF | PS]
- The probability that a product of random numbers is less than a fixed constant [PDF | PS]
- Massless Majorana and Weyl fermions cannot be distinguished [PDF | PS]
VII. Talks at conferences, workshops and schools, 2004--2023
2023 Conferences and workshops
- "Herbi Fest"--Pursuing Physics Beyond the Standard Model: a symposium in honor of Herbi Dreiner on the occasion of his 60th birthday, at the Bethe Center for Theoretical Physics, University of Bonn, in Bonn, Germany, March 28, 2023 Adventures from spinors to SUSY [PDF]
- International Workshop on Future Linear Colliders (LCWS2023), at SLAC National Accelerator Laboratory in Menlo Park, CA USA, May 17, 2023 P-even, CP-violating Signals in Scalar-Mediated Processes [PDF]
- PLANCK 2023: 25th International Conference from the Planck Scale to the Electroweak Scale, at the University of Warsaw in Warsaw, Poland, May 22, 2023 Higgs Boson Physics—The View Ahead [PDF]
- Beyond the SM from Colliders to the Early Universe: a symposium in honor of Marcela Carena and Carlos Wagner on the occasion of their 60th birthdays, at the University of Chicago in Chicago, IL USA and at Fermilab in Batavia, IL USA, May 28, 2023 My Journey through Physics with Marcela and Carlos [PDF]
- The 6th International Workshop on "Higgs as a Probe of New Physics" (HPNP2023), at Osaka University, in Osaka, Japan, June 5, 2023 Signals of new heavy scalars in the flavor-aligned 2HDM [PDF]
- pre-SUSY school 2023, at the University of Southampton, in Southampton, England, July 13, 2023 Supersymmetry and Higgs Physics [PDF]
- The XXX International Conference on Supersymmetry and Unification of Fundamental Interactions (SUSY 2023), at the University of Southampton, in Southampton, England, July 21, 2023 Supersymmetry Confronts a SM-Like Higgs Boson [PDF]
- Higgs Days at Santander 2023, in Santander, Spain, September 6, 2023 Signals of new heavy scalars in the flavor-aligned 2HDM [PDF]
- Scalars 2023, at the University of Warsaw in Warsaw, Poland, September 13, 2023 Scalar revelations at future e+e- colliders [PDF]
2022 Conferences and workshops
- The XXIX International Conference on Supersymmetry and Unification of Fundamental Interactions (SUSY 2022), at the University of Ioannina in Ioannina, Greece, June 29, 2022 The anapole moment of a charged lepton in softly-broken Supersymmetric QED [PDF]
- Workshop on Multi-Higgs Models, at the Instituto Superior Técnico in Lisbon, Portugal, August 30, 2022 P-even, CP-violating Signals in Scalar-Mediated Processes [PDF]
- IDT-WG3-Phys Open Meeting, online via zoom, November 17, 2022 P-even, CP-violating Signals in Scalar-Mediated Processes [PDF]
2021 Conferences and workshops
- The 5th International Workshop on "Higgs as a Probe of New Physics Special Edition 2021" (HPNP2021), in Osaka, Japan (held online), March 27, 2021 Exceptional regions of the 2HDM parameter space [PDF]
- 49th SLAC Summer Institute (SSI 2021), at SLAC, Stanford, CA USA (held online), August 27, 2021 Higgs Boson Physics—The View Ahead [PDF]
- Charged Higgs Online Workshop, August 30, 2021 Extended Higgs sector at present and future colliders [PDF]
- DISCRETE 2020-2021, December 3, 2021 A natural mechanism for a SM-like Higgs boson in the 2HDM without decoupling [PDF]
2020 Conferences and workshops
- All 2020 conferences and workshops at which I was scheduled to speak were canceled due to the Covid-19 pandemic.
2019 Conferences and workshops
- Higgs Days at Santander 2019, in Santander, Spain, September 20, 2019 Future Perspectives (Part 2) [PDF]
- Scalars 2019, at the University of Warsaw in Warsaw, Poland, September 14, 2019 The Future of Particle Physics---A Theorist’s Perspective [PDF]
- Scalars 2019, at the University of Warsaw in Warsaw, Poland, September 14, 2019 Approximate alignment without decoupling in the 2HDM naturally [PDF]
- Sorak Symposium reminiscence on Particle Physics, at NakSan Beach Hotel in Yang Yang, South Korea, August 15, 2019 The incomplete and biased history of the Higgs boson [PDF]
- Sorak Symposium reminiscence on Particle Physics, at NakSan Beach Hotel in Yang Yang, South Korea, August 15, 2019 Quo Vadis Higgs (or what the current Higgs data is trying to tell us) [PDF]
- 7th RISE Collaboration Workshop: NonMinimalHiggs, in Helsinki Finland, May 27, 2019 Approximate alignment without decoupling in the 2HDM naturally [PDF]
- The 4th Toyama International Workshop on "Higgs as a Probe of New Physics 2019" (HPNP2019), in Osaka, Japan, February 18, 2019 Symmetries and Mass Degeneracies in the Scalar Sector [PDF]
Professional talks
at conferences and workshops in previous years are stored
here.
Schools and Pedagogical Lectures
- pre-SUSY school 2023, at the University of Southampton, in Southampton, England, July 13, 2023 Supersymmetry and Higgs Physics [PDF]
- 49th SLAC Summer Institute (SSI 2021), at SLAC, Stanford, CA USA (held online), August 27, 2021 Higgs Boson Physics—The View Ahead [PDF]
- Sorak Symposium reminiscence on Particle Physics, at NakSan Beach Hotel in Yang Yang, South Korea, August 15, 2019 The incomplete and biased history of the Higgsboson [PDF]
- Sorak Symposium reminiscence on Particle Physics, at NakSan Beach Hotel in Yang Yang, South Korea, August 15, 2019 Quo Vadis Higgs (or what the current Higgs data is trying to tell us) [PDF]
- The 46th SLAC Summer Institute--Standard Model at 50: Successes and Challenges
VIIIa. 2023 Conferences and workshops in particle physics
The 38th Advanced School in Theoretical Physics: QFT/String Theory in the times of COVID-19, December 27, 2022--January 5, 2023 at the Israel Institute for Advanced Studies (IIAS), the Hebrew University of Jerusalem, Israel
8th International Conference on "High Energy Physics in the LHC Era" (HEP2023), January 9--13, 2023 in Valparaíso, Chile
GGI Lectures on the Theory of Fundamental Interactions, January 9--27, 2023 at the Galileo Galilei Institute (GGI) for Theoretical Physics in Florence, Italy
New Directions in Theoretical Physics 4, January 10--12, 2023 at the Higgs Centre for Theoretical Physics in Edinburgh, Scotland
Exotic Approaches to Naturalness, January 30--February 3, 2023 at CERN in Geneva, Switzerland
Higgs Maxwell Workshop 2023, February 15, 2023 at the Royal Society of Edinburgh in Edinburgh, Scotland
P5 Town Hall at LBNL, February 22--24, 2023, at Lawrence Berkeley National Laboratory in Berkeley, CA USA
Muon Collider Workshop, February 27--March 10, 2023, at the Kavli Institute for Theoretical Physics at the University of California, Santa Barbara, CA USA
KUTS workshop: "Precision SUSY Higgs Mass Calculation Initiative", February 27--March 1, 2023 at CERN in Geneva, Switzerland
P5 Town Hall at Fermilab and Argonne, March 21--24, 2023 at Fermilab in Batavia, IL USA
Prospecting for New Physics through Flavor, Dark Matter, and Machine Learning, March 26--31, 2023 at the Aspen Center for Physics in Aspen, CO USA
"Herbi Fest"--Pursuing Physics Beyond the Standard Model: a symposium in honor of Herbi Dreiner on the occasion of his 60th birthday, March 27--28, 2023 at the Bethe Center for Theoretical Physics (BCTP), University of Bonn, Germany
P5 Town Hall Meeting on the Future of High Energy Physics, April 12--14, 2023 at Brookhaven National Laboratory in Upton, NY USA
Bay Area Particle Theory Seminar (BAPTS), April 14, 2023 at San Francisco State University (SFSU) in San Francisco, CA
American Physical Society April Meeting, April 15--18, 2023, in Minneapolis, MN USA
MWDays 23 workshop, April 17--20, 2023 at CERN in Geneva, Switzerland
American Physical Society April Meeting, April 24--26, 2023, the virtual meeting
Corfu Workshop on Future Accelerators, April 24--28, 2023 in Corfu, Greece
P5 Town Hall at SLAC, May 2--5, 2023, at the SLAC National Accelerator Laboratory in Menlo Park, CA USA
Phenomenology 2023 Symposium, May 8--10, 2023 at the University of Pittsburgh in Pittsburgh, PA USA
International Workshop on Future Linear Colliders (LCWS2023), May 15--19, 2023 at SLAC National Accelerator Laboratory in Menlo Park, CA USA
PLANCK 2023: 25th International Conference from the Planck Scale to the Electroweak Scale, May 22--26, 2023 in Warsaw, Poland
Beyond the SM from Colliders to the Early Universe: a symposium in honor of Marcela Carena and Carlos Wagner on the occasion of their 60th birthdays, May 28--30, 2023 at the University of Chicago (and Fermilab on May 30) in Chicago, IL USA
16th International Symposium on Radiative Corrections: Applications of Quantum Field Theory to Phenomenology (RADCOR 2023), May 28--June 2, 2023 at the Crieff Hydro Spa Hotel in Crieff, Scotland
Third EuCAPT Annual Symposium, May 31--June 2, 2023 at CERN in Geneva Switzerland
The 6th International Workshop on "Higgs as a Probe of New Physics" (HPNP2023), June 5--9, 2023 at Osaka University, in Osaka, Japan
Theoretical Advanced Study Institute in ELementary Particle Physics (TASI 2023), June 5--30, 2023 at the University of Colorady in Boulder, CO USA
New Opportunities in High Energy Physics, June 11--July 9, 2023 at the Aspen Center for Physics in Aspen, CO USA
Physics at TeV Colliders and Beyond the Standard Model (PhysTeV 2023), June 12--30, 2023 at the Ecole de Physique des Houches in Les Houches, France
LoopFest XXI, June 26--28, 2023 at SLAC National Accelerator Laboratory in Menlo Park, CA USA
New Trends in High-Energy Physics, July 1--7, 2023 at BITP in Kiev, Ukraine
Standard Model at the LHC (SM@LHC), July 10--13, 2023 at Fermilab in Batavia, IL USA
PiTP 2023: "Understanding
Confinement", July 10--21, 2023 at the Institute for Advanced Study, Princeton, NJ. USA
pre-SUSY
2023: School on Supersymmetry
and Unification of Fundamental forces, July 10--14, 2023 at the University
of Southampton in Southampton, UK
XII International
Conference on New Frontiers in Physics, July 10--23, 2023 at the
Conference Center of the Orthodox Academy of Crete (OAC) in Kolymbari, Crete, Greece
HHH Workshop, July
14--16, 2023 in Dubrovnik, Croatia
The XXX International
Conference on Supersymmetry and Unification of Fundamental
Interactions (SUSY 2023), July 17--21, 2023 at the University
of Southampton in Southampton, UK
The 31st International
Symposium on Lepton Photon Interactions at High Energies, July
17--21, 2023 in Melbourne, Australia
Traversing the Particle Physics Peaks--Phenomenology to Formal, July 30--August 20, 2023 at
the Aspen Center for Physics in Aspen, CO USA
Amplitudes 2023 Summer
School,
July 31--August 4, 2023 at CERN in Geneva, Switzerland
Amplitudes 2023 Conference,
August 7--11, 2023 at CERN in Geneva, Sawitzerland
SLAC Summer Institute 2023: Machine Learning Across the Frontiers
(SSI2023), August 7--18, 2023 at SLAC National Acceleratort Laboratory
in Menlo Park, CA USA
The European Physical
Society Conference on High Energy Physics (EPS-HEP2023), August
21--25, 2023 at the University of Hamburg in Hamburg, Germany
Corfu Workshop
on the Standard Model and Beyond, August 27--September 7, 2023 in
Corfu, Greece
EFT Foundations
and Tools 2023, August 28--September 8, 2023 at the Mainz Institute
for Theoretical Physics (MITP), Johannes Gutenberg University, in
Mainz, Germany
Higgs Days at
Santander 2023, September 4--8, 2023 in Santander, Spain
Particle Avenues in
the Dark Universe Arena (PADUA): Light Dark Sectors,
September 6--8, 2023 in Padua, Italy
Hings Hunting
2023, September 11--13, 2023 at Orsay and Paris, France
50 Years of Quantum
Chromodynamics, September 11--15, 2023 at the University of
California, Los Angeles (UCLA) in Los Angeles, CA USA
Supersymmetric Quantum
Field Theory and Mathematics, September 11--22, 2023 in Castello
dei Principi Capano, in Pollica, Italy
Scalars
2023, September 13--16, 2023 at the University of Warsaw in
Warsaw, Poland
Theory
Challenges in the Precision Era of the Large Hadron Collider,
August 28--October 13, 2023 at the Galileo Galilei Institute for
Theoretical Physics in Arcetri, Florence, Italy
2023 ECFA Workshop on
Higgs/EW/Top factories, October 11--13, 2023 in Paestum (Salerno), Italy,
Bay Area Particle Theory Seminar (BAPTS),
October 13, 2023 at San Francisco State University (SFSU) in San
Francisco, CA
Bay Area Strings,
Information & Cosmology Symposium (BASICS 2023), October 13--14,
2023 at the University of California, Santa Cruz (UCSC) in Santa Cruz, CA USA
Beyond the Standard
Model: From Theory to Experiment (BSM-2023), November 6--9, 2023 in
Hurghada, Egypt
20th Workshop of the
LHC Higgs Working Group, November 13--15, 2023 at CERN in Geneva,
Switzerland
Theory Meets Experiments:
The high intensity frontier of particle physics, November 20--24,
2023 at the Galileo Galilei Institute for Theoretical Physics in
Arcetri, Florence, Italy
UK HEP Forum:
Completing the Higgs-Saw Puzzle, November 21--22, 2023 at The
Cosener's House in Abingdon, Oxfordshire, England
Higgs 2023, November
27--December 2, 2023 in Beijing, China
P5 Town Hall at
Fermilab, December 11, 2023 at Fermilab in Batavia, IL USA
Annual Meeting of the
Helmholtz Alliance "Physics at the Terascale”, December 12--13,
2023 at DESY in Hamburg, Germany
The Annual
Theory Christmas Meeting, December 12--14, 2023 at the IPPP,
Durham University in Durham, England
2023 US LHC Users
Association (USLUA) Annual Meeting, December 12--15, 2023 at
Fermilab in Batavia, IL USA
XXIX edition of
the Christmas Workshop at the Instituto de Física Teórica (IFT)
UAM-CSIC, December 13--15, 2023 in Madrid, Spain
GGI Lectures on
the Theory of Fundamental Interactions 2024, January 8--26, 2024 at the Galileo Galilei Institute for Theoretical Physics in
Arcetri, Florence, Italy
The Future of
Fundamental Composite Dynamics: Colliders, Cosmology and Tools,
March 4--15, 2024 at the Mainz Institute for Theoretical Physics
(MITP), Johannes Gutenberg University Mainz in Mainz, Germany
Bay Area Particle Theory Seminar (BAPTS),
March 15, 2024 at San Francisco State University (SFSU) in San
Francisco, CA USA
Challenging the standard cosmological model, April 15--16, 2024 at the
Royal Society in London, England
Cosmology,
Astrophysics, Theory and Collider Higgs 2024 (CATCH22+2), May
1--5, 2024 in Dublin, Ireland
Fundamental Physics in the Era of Big Data
and Machine Learning, May 26--June 23, 2024 at
the Aspen Center for Physics in Aspen, CO USA
The Microscopic Origin of Black Hole Entropy, June 2--30, 2024 at
the Aspen Center for Physics in Aspen, CO USA
Pre-SUSY
2024: School on Supersymmetry
and Unification of Fundamental forces, June 3--7, 2024 at the
Instituto de Fisica Teorica (UAM/CSIC) in Madrid, Spain
PLANCK 2024: 65th International Conference from the Planck Scale to the
Electroweak Scale, June 4--7, 2024 in Lisbon, Portugal
31st International Conference on Supersymmetry and Unification of
Fundamental Interactions: Theory meets Experiment (SUSY 2024), June
10--14, 2024 at the Instituto de Fisica Teorica (UAM/CSIC) in Madrid, Spain
Leveraging the Lepton Sector
as a Probe for New Physics, June 23--July 21, 2024 at
the Aspen Center for Physics in Aspen, CO USA
The 2024
International Workshop on Future Linear Colliders (LCWS2024), July
8--11, 2024 at the University of Tokyo in Tokyo, Japan
42nd International Conference on High
Energy Physics (ICHEP 2024), July 17--24, 2024 in Prague, Czech Republic
Tightening
the Gap Between Scattering Amplitudes and Events at the LHC at Higher
Orders, August 18--September 15, 2024 at
the Aspen Center for Physics in Aspen, CO USA
Workshop on Multi-Higgs
Models, September 3--6, 2024 at the Instituto Superior
Técnico in Lisbon, Portugal
Higgs Days at
Santander 2024, September 9--13, 2024 in Santander, Spain
Higgs Hunting
2024, September 23--25, 2024 at Orsay and Paris, France
Another compilation of upcoming particle physics conferences and workshops can be
found here.
Listings of conferences and
workshops from previous years are stored
here.
VIIIb. 2024 Conferences and workshops in particle physics
IX. University Service
Faculty Perceptions of a UCSC Research Environment in Need of Restoration and Improvement, a report by Howard E. Haber and David M. Harrington, sponsored by the UCSC Committee on Research and contributed in May, 1998 to the Advisory Report of the Millennium Committee. [HTML]
University Committee on Research Policy (UCORP) 1995--1996 Public web page.
Should UC renew its contract with the Department of Energy (DOE) to manage the Lawrence Livermore National Laboratory and Los Alamos National Laboratory? The following web page documents the 1996 UC systemwide campus debate on this question. A town meeting was held on the UCSC campus on March 7, 1996 to discuss these issues.
X. Extracurricular Activities
Some of the physics students and I play softball in the UCSC intramural coed softball league. The fall season runs from early October to early December, and the spring season runs from early April to early June.
Our team, called Re-Entry, is sponsored by the STARS organization on campus, which provides support and counseling for returning (or re-entry) students to campus. You can follow our season exploits on the Re-Entry Team Webpage.
XI. Physics, Math and Computer Links
Book Price comparisons
CERN links
LHC Performance and Statistics
LHC Programme Coordination web pages
ATLAS Online Luminosity [for more details click here]
CMS Online Luminosity [for more details click here]
CERN Physics results
ATLAS Experiment--Public results
ATLAS Supersymmetry Physics results
CMS Supersymmetry Physics results
Electroweak and Higgs precision observables
LHC Higgs Cross Section Working Group (HXSWG)
SFitter Higgs coupling analysis
Higgs boson links
Precision SUSY Higgs Mass Calculation Initiative
LHC Higg Cross Section Working Group Twiki
Heavy Higgs and Beyond Standard Model subgroup of the HXSWG
Handbook of LHC Higgs Cross Sections: 1. Inclusive Observables [Postscript | PDF]
Handbook of LHC Higgs Cross Sections: 2. Differential Distributions [Postscript | PDF]
Handbook of LHC Higgs Cross Sections: 3. Higgs Properties [Postscript | PDF]
Handbook of LHC Higgs Cross Sections: 4. Deciphering the nature of the Higgs sector [PDF]
High Energy Physics links
High Energy Physics Software and Collider Tools
International Linear Collider
American Linear Collider Working Group
International Linear Collider (ILC) homepage
CLIC detector and physics study (CLICdp)--WG Physics Potential
Compact Linear Collider (CLIC)
Journals
Journal of Mathematical Physics
Physical Review Online Archive (PROLA)
Mathematics links
Mathematical Association of America
Meetings and Conferences organized by SCIPP Theory
Howie-Fest-70, February 7, 2022 at the University of California, Santa Cruz, CA USA (held online)
SCIPP Reunion Theory Symposium, April 24, 2015 at the University of California, Santa Cruz
The search for Fundamental Physics: Higgs Bosons & Supersymmetry, A symposium in honor of Michael Dine and Howard Haber on the occasion of their 60th Birthdays, January 4--6, 2013
West Coast LHC Theory meeting, May 21, 2010
Confronting Challenges in Theoretical Physics, A Symposium in Honor of Tom Banks and Willy Fischler on the Occasion of their 60th Birthdays June 15--16, 2009
RADCOR 2000, 5th International Symposium on Radiative Corrections, September 11--15, 2000
Particle physics outreach
Physikshow at the University of Bonn
Particle physics jobs
Theoretical Particle Physics Jobs Rumor Mill
High Energy Physics Postdoc Rumor Mill
Physics blogs
AsymptotiaPhysics links
Division of Particles and fields of the APS
Professional publishers
Search links
Snowmass 2021 links
The Particle Physics Community Planning Exercise
Tevatron physics results
Tevatron New Phenomena & Higgs Working Group
TeX and LaTeX links
Selected extracts from the Comprehensive LaTeX Symbol List [HTML | [PDF]
Using Imported Graphics in LaTeX and pdfLaTeX [PDF]
XII. Miscellaneous links of interest
Humor
Piled Higher and Deeper (Ph.D. Comics)
Sports
ESPN
National Basketball Association
San
Francisco Giants
Photographs that I have taken at various physics conferences and workshops can
be found at
this link.
Pictures of the Re-Entry coed softball team can be found
here.
Weather
XIII. Photographs
Last Updated: December 1, 2023