This is the professional website of Howard Haber, Distinguished Professor of Physics at the University of California, Santa Cruz.
RECENT NEWS
March 12, 2024: My presentation to Physics 205 can be found in Section V of this website.
March 1, 2024: Some notes entitled Acceleration and Force in Special Relativity, which include a treatment of the instantaneous rest frame of an accelerating particle, have been posted to Section VI of this website.
February 28, 2024: A pedagogical presentation of the Thomas precession and the celebrated BMT equation has been posted to Section VI of this website.
February 25, 2024: Some notes on the origin of vector spherical harmonics entitled The tensor spherical harmonics, which employs the formalism of addition of angular momentum in quantum mechanics, has been posted to Section VI of this website. In the ﬁnal section of these notes, the application of vector spherical harmonics to the electromagnetic multipole radiation ﬁelds is exhibited.
February 19, 2024: I could not find in the literature closedform expressions for the twoloop BarrZee diagram integrals. So, I went ahead and derived these results, which can be expressed in terms of dilogarithms or the Clausen function (depending on the value of a parameter). A short note presenting the derivation, entitled Evaluating integrals arising from BarrZee diagrams, has been posted to Section VI of this website.
February 13, 2024: Today, my paper in collaboration with Miguel Bento and Joao Silva, entitled Classes of complete dark photon models constrained by Zphysics, was published in Physics Letters B. 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.
January 9, 2024: The 2023 update of the Supersymmetry (Theory) review that appears in the Review of Particle Physics by the Particle Data Group (PDG) was published online on December 1, 2023 (see news item below). To make it widely accessuble, this review was posted on the arXiv today. A link to the arXiv version of this review can be found in Section II of this website.
December 29, 2023: The 2024 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 21, 2023: My paper entitled Explicit form for the most general Lorentz transformation revisited was posted on the arXiv. A link to this paper can be found in Section II of this website.
Explicit formuale for the 4x4 Lorentz transformation matrices corresponding to a pure boost and a pure threedimensional rotation are very wellknown. Significantly less wellknown is the explicit formula for a general Lorentz transformation with arbitrary boost and rotation parameters. We revisit this more general formula by presenting two different derivations, which are shown to yield the same result. The first derivation evaluates the exponential of a 4x4 matrix by making use of the Lagrange interpolating polynomial. The second derivation exploits the assertion that for twocomponent spinors η and χ, the spinor product ησ^{μ}χ^{†} is a Lorentz fourvector. As a result, the formula for a general Lorentz transformation reduces to the computation of the trace of a product of 2x2 matrices.
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 coauthored 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 Zphysics, was posted on the arXiv. A link to this paper can be found in Section II of this website.
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 Treelevel 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 treelevel 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 FlavorAligned TwoHiggsDoublet 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 twoHiggs doublet model. By employing generic flavoraligned 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 flavoraligned 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 SMLike 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 preSUSY 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, coauthored by Herbi K. Dreiner, Howard E. Haber and
Stephen P. Martin, have now arrived from the publisher. On the
following day, I made the tenmile 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, coauthored 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 Treelevel 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 treelevel 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 flavoraligned 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 Peven, CPviolating 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.
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) TeVscale supersymmetry as a framework for incorporating a weaklycoupled 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 lowenergy phenomena with fundamental scales that lie beyond the TeV scale (e.g. lepton number violation and implications for neutrino masses).
After more then ten years after the discovery of the Higgs boson in 2012 at the Large Hadron Collider (LHC), many properties of this spinzero particle have been measured. These results 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 twoHiggs 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 basisindependent treatment of the 2HDM. During the past few years, I have focused on the relevance of the socalled decoupling and alignment limits of the 2HDM in which one of scalars closely resembles the SM Higgs boson. The basisindependent 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 eprint 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:

Supersymmetry, Part I (Theory)
Ben Allanach, Howard E. Haber. Jan 8, 2024. 46 pp.
ePrint: arXiv:2401.03827 [hepph]  PDF

Explicit form for the most general Lorentz transformation revisited
Howard E. Haber. Dec 20, 2023. 24 pp.
ePrint: arXiv:2312.12969 [physics.classph]  PDF
Links to my 2024 publications:

Classes of complete dark photon models constrained by ZPhysics
Miguel P. Bento, Howard E. Haber, Joao P. Silva. Nov 10, 2023. 7 pp.
Published in Phys. Lett. B 850 (2024) 138501
DOI: 10.1016/j.physletb.2024.138501
Published version: [PDF]
ePrint: arXiv:2311.04976 [hepph]  PDF
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Abstract and PDF from arXiv.org; Journal Server  Phys.Lett.
Links to my 2023 publications:

Higgs Boson Physics: The View Ahead
Howard E. Haber (UC, Santa Cruz). July 24, 2023. 9 pp.
Published in Letters in High Energy Physics, LHEP451 (2023)
DOI: 10.31526/LHEP.2023.451
Published version: [PDF]
ePrint: arXiv:2210.00449 [hepph]  PDF
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Abstract and PDF from arXiv.org; Journal Server  LHEP

Treelevel 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]
ePrint: arXiv:2306.01836 [hepph]  PDF
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Accommodating Hints of New Heavy Scalars in the Framework of the FlavorAligned TwoHiggsDoublet Model
Joseph M. Connell, Pedro M. Ferreira, Howard E. Haber. Feb 27, 2023. 48 pp.
SCIPP22/02
Published in Phys.Rev. D 108, 055031 (2023)
DOI: 10.1103/PhysRevD.108.055031
Published version: [PDF]
ePrint: arXiv: 2302.13697 [hepph]  PDF
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Links to my 2022 publications:

Peven, CPviolating Signals in ScalarMediated Processes
Howard E. Haber, Venus Keus, Rui Santos. Jun 20, 2022. 58 pp.
DIASSTP2202 and SCIPP22/01
Published in Phys.Rev. D 106, 095038 (2022)
DOI: 10.1103/PhysRevD.106.095038
Published version: [PDF]
ePrint: arXiv:2206.09643 [hepph]  PDF
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Links to my 2021 publications:

Exceptional regions of the 2HDM parameter space
Howard E. Haber, Joao P. Silva. Feb 14, 2021. 97 pp.
CFTP/21001 and SCIPP21/01
Published in Phys.Rev. D 103, 115012 (2021), Erratumibid. D105 (2022) 119902
DOI: 10.1103/PhysRevD.103.115012, 10.1103/PhysRevD.105.119902
Published version: [PDF] [Erratum]
ePrint: arXiv:2102.07136 [hepph]  PDF
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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.
SCIPP20/03
Published in JHEP 05 (2021) 235
DOI: 10.1007/JHEP05(2021)235
Published version: [PDF]
ePrint: arXiv:2011.13159 [hepph]  PDF
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Abstract and PDF from arXiv.org; Journal Server  JHEP

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]
ePrint: arXiv:2009.03990 [hepph]  PDF
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Abstract and PDF from arXiv.org; Journal Server  Int.J.Mod.Phys.

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]
ePrint: arXiv:1912.13302 [mathph]  PDF
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Abstract and PDF from arXiv.org
Links to my 2020 publications:

Basisindependent 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/19032 and SCIPP19/01
Published in Phys.Rev. D 101, 055023 (2020)
DOI: 10.1103/PhysRevD.101.055023
Published version: [PDF]
ePrint: arXiv:2001.01430 [hepph]  PDF
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Links to my 2019 publications:

Symmetries and Mass Degeneracies in the Scalar Sector
Howard E. Haber, O.M. Ogreid, P. Osland, M.N. Rebelo. Aug 26, 2018. 43 pp.
SCIPP18/04
Published in JHEP 01 (2019) 042
DOI: 10.1007/JHEP01(2019)042
Published version: [PDF]
ePrint: arXiv:1808.08629 [hepph]  PDF
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Links to my 2018 publications:

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.
SCIPP18/05
Published in JHEP 12 (2018) 056
DOI: 10.1007/JHEP12(2018)056
Published version: [PDF]
ePrint: arXiv:1808.01472 [hepph]  PDF
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MultiHiggs doublet models: the Higgsfermion couplings and their sum rules
Miguel P. Bento, Howard E. Haber, J.C. Romao, Joao P. Silva. Aug 21, 2018. 24 pp.
SCIPP18/06
Published in JHEP 10 (2018) 143
DOI: 10.1007/JHEP10(2018)143
Published version: [PDF]
ePrint: arXiv:1808.07123 [hepph]  PDF
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Links to my 2017 publications:

MultiHiggs 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.
CFTP17005, SCIPP17/10
Published in JHEP 11 (2017) 095
DOI: 10.1007/JHEP11(2017)095
Published version: [PDF]
ePrint: arXiv:1708.09408 [hepph]  PDF
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The Impact of TwoLoop Effects on the Scenario of MSSM Higgs Alignment without Decoupling
Howard E. Haber, Sven Heinemeyer, Tim Stefaniak. Aug 15, 2017. 31 pp.
IFTUAMCSIC17074, SCIPP17/09
Published in Eur.Phys.J. C77 (2017) 742
DOI: 10.1140/epjc/s1005201752435
Published version: [PDF]
ePrint: arXiv:1708.04416 [hepph]  PDF
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Abstract and PDF from arXiv.org; Journal Server  Eur.Phys.J.C.

High scale flavor alignment in twoHiggs doublet models and its phenomenology
Stefania Gori, Howard E. Haber, Edward Santos. Mar 16, 2017. 39 pp.
SCIPP17/00
Published in JHEP 06 (2017) 110
DOI: 10.1007/JHEP06(2017)110
Published version: [PDF]
ePrint: arXiv:1703.05873 [hepph]  PDF
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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.
BONNTH201606, DESY16151, IFTUAMCSIC16068, NIKHEF2016033, SCIPP1610
Published in Eur.Phys.J. C77 (2017) 67
DOI: 10.1140/epjc/s1005201645849
Published version: [PDF]
ePrint: arXiv:1608.00638 [hepph]  PDF
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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:

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.
SCIPP16/08
Published in Phys.Rev. D94 (2016) 095003
DOI: 10.1103/PhysRevD.94.095003
Published version: [PDF]
ePrint: arXiv:1607.06995 [hepth]  PDF
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Partially Natural Two Higgs Doublet Models
Patrick Draper, Howard E. Haber, Joshua T. Ruderman. May 10, 2016. 31 pp.
SCIPP16/06 and NSFKITP1604
Published in JHEP 06 (2016) 124
DOI: 10.1007/JHEP06(2016)124
Published version: [PDF]
ePrint: arXiv:1605.03237 [hepph]  PDF
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Scrutinizing the Alignment Limit in TwoHiggsDoublet Models. Part 2: m_{H}=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, UCD2015002, SCIPP15/13
Published in Phys.Rev. D93 (2016) 035027
DOI: 10.1103/PhysRevD.93.035027
Published version: [PDF]
ePrint: arXiv:1511.03682 [hepph]  PDF
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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.
EFI1532, FERMILABPUB15407T, MCTP1515, SCIPP 15/12, WSUHEP1505
Published in Phys.Rev. D93 (2016) 035013
DOI: 10.1103/PhysRevD.93.035013
Published version: [PDF]
ePrint: arXiv:1510.09137 [hepph]  PDF
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Links to my 2015 publications:

New LHC Benchmarks for the CPconserving TwoHiggsDoublet Model
Howard E. Haber, Oscar Stål. July 15, 2015. 37 pp.
SCIPP1510
Published in Eur.Phys.J. C75 (2015) 491, Erratumibid. C76 (2016) 312
DOI: 10.1140/epjc/s100520153697x, 10.1140/epjc/s1005201641514
Published version: [PDF] [Erratum]
ePrint: arXiv:1507.04281 [hepph]  PDF
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Abstract and PDF from arXiv.org; Journal Server  Eur.Phys.J.C.; Journal Server  Erratumibid.

Scrutinizing the Alignment Limit in TwoHiggsDoublet Models. Part 1: m_{h} = 125 GeV
Jérémy Bernon, John F. Gunion, Howard E. Haber, Yun Jiang, Sabine Kraml. July 3, 2015. 48 pp.
LPSC15154, UCD2015001, SCIPP15/08
Published in Phys.Rev. D92 (2015) 075004
DOI: 10.1103/PhysRevD.92.075004
Published version: [PDF]
ePrint: arXiv:1507.00933 [hepph]  PDF
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Preserving the validity of the TwoHiggs 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.
SCIPP1507
Published in Phys.Rev. D92 (2015) 033003, Erratumibid. D94 (2016) 059903
DOI: 10.1103/PhysRevD.92.033003, 10.1103/PhysRevD.94.059903
Published version: [PDF] [Erratum]
ePrint: arXiv:1505.04001 [hepph]  PDF
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Complementarity Between NonStandard 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.
EFI1436, FERMILABPUB14392T, MCTP1437, SCIPP1416
Published in Phys.Rev. D91 (2015) 035003
DOI: 10.1103/PhysRevD.91.035003
Published version: [PDF]
ePrint: arXiv:1410.4969 [hepph]  PDF
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Thirteen selected publications published from 20032014 are listed below.

Probing wrongsign 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.
SCIPP1402, UCD20142
Published in Phys.Rev. D89 (2014) 115003
DOI: 10.1103/PhysRevD.89.115003
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ePrint: arXiv:1403.4736 [hepph]  PDF
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Abstract and Postscript and PDF from arXiv.org; Journal Server  Phys.Rev.

Decoupling of the Righthanded Neutrino Contribution to the Higgs Mass in Supersymmetric Models
Patrick Draper, Howard E. Haber. Apr 22, 2013. 27 pp.
SCIPP1304.
Published in Eur.Phys.J. C73 (2013) 2522
DOI: 10.1140/epjc/s1005201325227
Published version: [PDF]
ePrint: arXiv:1304.6103 [hepph]  PDF
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Abstract and PDF from arXiv.org; Journal Server  Eur.Phys.J.C.

Massdegenerate Higgs bosons at 125 GeV in the TwoHiggsDoublet Model.
P.M. Ferreira, Howard E. Haber, Rui Santos, Joao P. Silva. Nov 2012. 17 pp.
SCIPP1214.
Published in Phys.Rev. D87 (2013) 055009
DOI: 10.1103/PhysRevD.87.055009
Published version: [PDF]
ePrint: arXiv:1211.3131 [hepph]  PDF
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Abstract and Postscript and PDF from arXiv.org; Journal Server  Phys.Rev.

Grouptheoretic Condition for Spontaneous CP Violation.
Howard E. Haber (UC, Santa Cruz), Ze'ev Surujon (UC, Irvine). Jan 2012. 25 pp.
SCIPP1201, UCITR201201.
Published in Phys.Rev. D86 (2012) 075007
DOI: 10.1103/PhysRevD.86.075007
Published version: [PDF]
ePrint: arXiv:1201.1730 [hepph] PDF
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Abstract and Postscript and PDF from arXiv.org; Journal Server  Phys.Rev.

Basisindependent methods for the twoHiggsdoublet model III: The CPconserving limit, custodial symmetry, and the oblique parameters S, T, U.
Howard E. Haber, Deva O'Neil (UC, Santa Cruz). Nov 2010. 58 pp.
SCIPP1018.
Published in Phys.Rev. D83 (2011) 055017
DOI: 10.1103/PhysRevD.83.055017
Published version: [PDF]
ePrint: arXiv:1011.6188 [hepph]
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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.
DAMTP201083, SCIPP1016.
Published in JHEP 01 (2011) 138, Erratumibid. 07 (2011) 087, Erratumibid. 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]
ePrint: arXiv:1010.4261 [hepph]
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Abstract and Postscript and PDF from arXiv.org; Journal Server  JHEP; Journal Server  Erratumibid.; Journal Server  Erratumibid. 
Generalized CP symmetries and special regions of parameter space in the twoHiggsdoublet 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]
ePrint: arXiv:0902.1537 [hepph]  PDF
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Abstract and PDF from arXiv.org; Journal Server  Phys.Rev

Hard supersymmetrybreaking 'wrongHiggs' couplings of the MSSM.
Howard E. Haber, John D. Mason (UC, Santa Cruz). Nov 2007. 32 pp.
SCIPP0716.
Published in Phys.Rev. D77 (2008) 115011
DOI: 10.1103/PhysRevD.77.115011
Published version: [PDF]
ePrint: arXiv:0711.2890 [hepph]
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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.
IPPP0716,CPT0732, SCIPP0710.
Published in JHEP 11 (2007) 059
DOI: 10.1088/11266708/2007/11/059
Published version: [PDF]
ePrint: arXiv:0707.3718 [hepph]
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Abstract and Postscript and PDF from arXiv.org; Journal Server  JHEP; JHEP Electronic Journal Server 
Basisindependent methods for the twoHiggsdoublet model. II. The Significance of tan beta.
Howard E. Haber, Deva O'Neil (UC, Santa Cruz, Inst. Part. Phys.). Feb 2006. 48 pp.
SCIPP0601.
Published in Phys.Rev. D74 (2006) 015018, Erratumibid. D74 (2006) 059905
DOI: 10.1103/PhysRevD.74.015018, 10.1103/PhysRevD.74.059905
Published version: [PDF] [Erratum]
ePrint: hepph/0602242  PDF
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Abstract and Postscript and PDF from arXiv.org; Journal Server  Phys.Rev. 
Conditions for CPviolation in the general twoHiggsdoublet 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
SCIPP0416, UCD200429
DOI: 10.1103/PhysRevD.72.095002
Published version: [PDF]
ePrint: hepph/0506227  PDF
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Abstract and Postscript and PDF from arXiv.org; Journal Server  Phys.Rev. 
Basisindependent methods for the twoHiggsdoublet model
Sacha Davidson (Durham U., IPPP & Lyon, IPN), Howard E. Haber (Durham U., IPPP & UC, Santa Cruz). Apr 2005. 45 pp.
IPPP0323, DCPT0346, SCIPP0415.
Published in Phys.Rev. D72 (2005) 035004, Erratumibid. D72 (2005) 099902
DOI: 10.1103/PhysRevD.72.035004, 10.1103/PhysRevD.72.099902
Published version: [PDF] [Erratum]
ePrint: hepph/0504050  PDF
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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.
SCIPP0210.
Published in Phys.Rev. D67 (2003) 075019
DOI: 10.1103/PhysRevD.67.075019
Published version: [PDF]
ePrint: hepph/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.

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) 18151818
SCIPP9042
DOI: 10.1103/PhysRevLett.66.1815
Published version: [PDF]

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, Erratumibid. B402 (1993) 567569
SLACPUB3404.
DOI: 10.1016/05503213(86)903408; 10.1016/05503213(93)906537
Published version: [PDF] [Erratum]

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CERN Library Record ; SLAC Document Server; Journal Server  Nuclear Physics B; . Journal Server  Erratumibid.
Links to Conference proceedings, 20132022:

A natural mechanism for a SMlike Higgs boson in the 2HDM without decoupling
Howard E. Haber. May 17, 2022. 15 pp.
Invited talk at DISCRETE 20202021: 7th Symposium on Prospects in the Physics of Discrete Symmetries, November 29December 3, 2021
Published in PoS(DISCRETE20202021)010
Published version: [PDF]
ePrint: arXiv:2205.07578 [hepph]  PDF
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Abstract and PDF from arXiv.org

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, 1724 March 2018
ePrint: arXiv:1805.05754 [hepph]  PDF
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Abstract and PDF from arXiv.org

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, 36 October 2016
Published in PoS(CHARGED2016)029
Published version: [PDF]
ePrint: arXiv:1701.01922 [hepph]  PDF
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Abstract and Postscript and PDF from arXiv.org; INSPIRE HEP Conference database listing [Conference C161003.1  Contributions]; Journal Server  Proceedings of Science

The Higgs data and the Decoupling Limit
Howard E. Haber. Dec 31, 2013. 15 pp.
SCIPP1315.
Published in the Proceedings of the Toyama International Workshop on Higgs as a Probe of New Physics 2013 (HPNP2013) on eConf
ePrint: arXiv:1401.0152 [hepph]  PDF
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Abstract and Postscript and PDF from arXiv.org; INSPIRE HEP Conference database listing [Conference C130213.1  Contributions]
Articles on the Higgs boson meant for a broader audience can be found below.

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://epnews.web.cern.ch/content/higgsbosonphysicsviewahead 
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/august2006/60secondshiggsboson
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.

PDF
from the 2022 edition and 2023 update of the Review of Particle Physics
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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Link to Fulltext 
Higgsmass 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 20229, DESY20229, IFTUAM/CSIC20184, FRPHENO2020021, KATP232020, MPP2020235, KATP232020, MPP2020235, P3H20086, TTK2053
Published in Eur.Phys.J. C81 (2021) 450
DOI: 10.1140/epjc/s10052021091982
Published version: [PDF]
ePrint: arXiv:2012.15629 [hepph]  PDF
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CERN Document Server; ADS Abstract Service; Link to Article from SCOAP3
Abstract and PDF from arXiv.org

Supersymmetric Theory and Models
Howard E. Haber, Laurel Stephenson Haskins. Dec 16, 2017. 144 pp.
SCIPP1711
Conference: C160606.15, pp. 355499 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
ePrint: arXiv:1712.05926 [hepph]  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.
ePrint: arXiv:1310.0763 [hepph]  PDF
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Abstract and PDF from arXiv.org 
Geometric picture of generalizedCP and Higgsfamily transformations in the twoHiggsdoublet 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.
SCIPP1015, HDTHEP101.
Published in Int.J.Mod.Phys. A26 (2011) 769808
DOI: 10.1142/S0217751X11051494
Published version: [PDF]
ePrint: arXiv:1010.0935 [hepph]
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Abstract and Postscript and PDF from arXiv.org; Journal Server  Int.J.Mod.Phys. 
Twocomponent spinor techniques and Feynman rules for quantum field theory and supersymmetry.
Herbi K. Dreiner, Howard E. Haber, Stephen P. Martin. Dec 2008. 246 pp.
BNTH200812, SCIPP0808.
Published in Phys.Rept. 494 (2010) 1196
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]
ePrint: arXiv:0812.1594 [hepph]
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Abstract and Postscript and PDF from arXiv.org; Journal Server  Phys.Rept. 
Higgs boson theory and phenomenology.
Marcela Carena (Fermilab), Howard E. Haber (UC, Santa Cruz). Aug 2002. 87 pp.
hepph/0208209,FERMILABPUB02114T, SCIPP0207.
Published in Prog.Part.Nucl.Phys. 50 (2003) 63152
DOI: 10.1016/S01466410(02)001771
Published version: [PDF]
ePrint: hepph/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.
hepph/9405376, SCIPP9349, NSFITP9430, C930726.
Published in Stanford 1993, Spin structure in high energy processes, pp. 231272
Presented at Conference: C930726
ePrint: hepph/9405376
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Abstract from arXiv.org; KEK scanned document ; CERN Library Record

Lectures on electroweak symmetry breaking.PDF from this website.
Howard E. Haber (UC, Santa Cruz). Mar 1991. 136 pp.
SCIPP9106
Invited lectures given at Conference: C900603 (Boulder TASI 90:340475), p.340475

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.
UMHETH8317, SCIPP8547.
Published in Phys.Rept. 117 (1985) 75263
DOI: 10.1016/03701573(85)900511
Published version: [PDF] [Erratum]
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Journal Server  Phys.Rept.; KEK scanned document
Webpage for Twocomponent 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/.
IV. Published Books
Coauthored 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.

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.
SCIPP89/13, UCD894, BNL41644.
Published in Front. Phys. 80 (2000) 1448
Link to The Higgs Hunter's Guide at the Perseus Books webpage. See also the Routledge (member of Taylor & Francis Group) webpage.
John F. Gunion (UC, Davis), Howard E. Haber (UC, Santa Cruz), Gordon L. Kane (Michigan U.), Sally Dawson (Brookhaven). Dec 1992. 5 pp.
hepph/9302272, SCIPP9258.
ePrint: hepph/9302272

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Abstract and Postscript and PDF from arXiv.org
Edited books

Particle physics and cosmology: The quest for physics beyond the standard model(s). Proceedings, Theoretical Advanced Study Institute, TASI 2002, Boulder, USA, June 328, 2002.
H.E. Haber, (ed.) (UC, Santa Cruz), A.E. Nelson, (ed.) (Washington U., Seattle). 2004. 892 pp.
ISBN9789812388926.
Prepared for Conference: C020602.1 (River Edge, USA: World Scientific (2004) 892 p)Link to Particle Physics and Cosmology webpage at World Scientific Publishing.

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.

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) 497953Link to From the Planck Scale to the Weak Scale: Toward a Theory of the Universe webpage at World Scientific Publishing.

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) 1495Link to From the Planck Scale to the Weak Scale: Toward a Theory of the Universe webpage at World Scientific Publishing.
V. Teaching
 Winter, 2024 Physics 214 Electromagnetism II
 Winter, 2024 Physics 205 Introduction to Research "Research on the Theory of the Terascale" [PDF  Powerpoint]
 Spring, 2023 Physics 251 Group Theory and Modern Physics
 Spring, 2020 Physics 222 Quantum Field Theory III
 Fall, 2019 Physics 116A Mathematical Methods in Physics I
 Winter, 2018 Physics 215 Introduction to NonRelativistic 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 NonRelativistic 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
 Acceleration and Force in Special Relativity [PDF  PS]
 Thomas Precession and the BMT equation [PDF  PS]
 The tensor spherical harmonics [PDF  PS]
 Evaluating integrals arising from BarrZee diagrams [PDF  PS]
 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 PassarinoVeltman function B_{0}(p^{2};m_{1}^{2},m_{2}^{2}) [PDF  PS]
 Evaluating the oneloop 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 secondorder 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 secondrank 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, 20042023
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 Peven, CPviolating Signals in ScalarMediated 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 flavoraligned 2HDM [PDF]
 preSUSY 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 SMLike Higgs Boson [PDF]
 Higgs Days at Santander 2023, in Santander, Spain, September 6, 2023 Signals of new heavy scalars in the flavoraligned 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 softlybroken Supersymmetric QED [PDF]
 Workshop on MultiHiggs Models, at the Instituto Superior Técnico in Lisbon, Portugal, August 30, 2022 Peven, CPviolating Signals in ScalarMediated Processes [PDF]
 IDTWG3Phys Open Meeting, online via zoom, November 17, 2022 Peven, CPviolating Signals in ScalarMediated 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 20202021, December 3, 2021 A natural mechanism for a SMlike Higgs boson in the 2HDM without decoupling [PDF]
Professional talks at conferences and workshops in previous years are stored here.
Schools and Pedagogical Lectures
 preSUSY 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 InstituteStandard Model at 50: Successes and Challenges, at SLAC in Stanford, CA USA, August 6, 2018 The woefully incomplete, unabashedly biased history of the Higgs Boson [PDF]
 PreSUSY 2016, preceding the 24th International Conference on Supersymmetry and Unification of Fundamental Interactions, Melbourne, Australia, 27 JuneJuly 8, 2016 SM and SUSY Higgs [Lecture 1  Lecture 2  Lecture 3]
 2016 Theoretical Advanced Study Institute (TASI 2016), 6 June1 July 2016, Supersymmetric Theories and Models [Lecture 1  Lecture 2  Lecture 3  Lecture 4]
 The 40th SLAC Summer Institute, The Electroweak Scale: Unraveling the Mysteries at the LHC, 23 July3 August 2012, Electroweak Symmetry Breaking (EWSB): The Basics [Lecture 1  Lecture 2]
 Idpasc Higgs School, Foz do Arelho, Portugal, 69 Sept 2011, Theory of Higgs Bosons: The Standard Model and Beyond [PDF]
 The Pre SUSY school, preceding the 18th International Conference on Supersymmetry and Unification of Fundamental Interactions, Bonn, Germany, 1921 August, 2010, Twocomponent Spinor Formalism: practical methods for treating Majorana fermions [PDF]
 Spaatind 2010: Nordic Conference in Particle Physics Spaatind 2010, Spaatind, Norway, 28 January 2010, Introduction to Electroweak Symmetry Breaking [PDF]; Twocomponent spinor formalism [PDF]
 Collider Phenomenology, DESY Theory Workshop, DESY Hamburg, Germany, 29 September1 October 2009 Introduction to Electroweak Symmetry Breaking [PDF]
 The CERNFermilab 2008 Hadron Collider Physics Summer School, Fermilab, August 1222, 2008, Higgs Boson Theory and Phenomenology [PDF]
 PreSUSY 2005, preceding the 13th International Conference on Supersymmetry and Unification of Fundamental Interactions, IPPP Durham, 29 JuneJuly 15, 2005 Practical methods for treating Majorana fermions [PDF]
 PSI Zuoz Summer School on Particle Physics, Zuoz, Switzerland, 1521 August, 2004 Introduction to Supersymmetry [Lecture 1 Lecture 2 Lecture 3 Lecture 4]
VIII. 2024 Conferences and workshops in particle physics
GGI Lectures on the Theory of Fundamental Interactions 2024, January 826, 2024 at the Galileo Galilei Institute for Theoretical Physics in Arcetri, Florence, Italy
The Future of Fundamental Composite Dynamics: Colliders, Cosmology and Tools, March 415, 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
Second Annual U.S. Future Circular Collider (FCC) Workshop 2024, March 2527, 2024 at MIT in Cambridge, MA USA
April APS Meeting 2024, April 36, 2024 in Sacramento, CA USA
Challenging the standard cosmological model, April 1516, 2024 at the Royal Society in London, England
Cosmology, Astrophysics, Theory and Collider Higgs 2024 (CATCH22+2), May 15, 2024 in Dublin, Ireland
DPF Meeting and the Phenomenology Symposium (Pheno) 2024, May 1317, 2024 at the University of Pittsburgh and Carnegie Mellon University in Pittsburgh, PA USA
Modular Invariance Approach to the Lepton and Quark Flavour Problems: from Bottomup to Topdown, May 1317, 2024 at the Mainz Institute for Theoretical Physics (MITP), Johannes Gutenberg University Mainz, in Mainz, Germany
4th EuCAPT Annual Symposium, May 1416, 2024 at CERN in Geneva Switzerland
LoopFest XXII, May 2022, 2024 at Southern Methodist University in Dallas, Texas, USA
Fundamental Physics in the Era of Big Data and Machine Learning, May 26June 23, 2024 at the Aspen Center for Physics in Aspen, CO USA
The Microscopic Origin of Black Hole Entropy, June 230, 2024 at the Aspen Center for Physics in Aspen, CO USA
12th Edition of the Large Hadron Collider Physics Conference (LHCP 2024), June 37, 2024 at Northeastern University in Boston, MA USA
The Evaluation of the Leading Hadronic Contribution to the Muon g2, June 37, 2024 at the Mainz Institute for Theoretical Physics (MITP), Johannes Gutenberg University Mainz, in Mainz, Germany
PreSUSY 2024: School on Supersymmetry and Unification of Fundamental forces, June 37, 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 37, 2024 in Lisbon, Portugal
FCC Week 2024, June 1014, 2024 in San Francisco, CA USA
31st International Conference on Supersymmetry and Unification of Fundamental Interactions: Theory meets Experiment (SUSY 2024), June 1014, 2024 at the Instituto de Fisica Teorica (UAM/CSIC) in Madrid, Spain
Theory Facing Experiment on the Dark Matter and Flavor Puzzles, June 1021, 2024 at the Mainz Institute for Theoretical Physics (MITP), Johannes Gutenberg University Mainz, in Mainz, Germany
Crossroads between Theory and Phenomenology, June 1028, 2024 at CERN in Geneva, Switzerland
Leveraging the Lepton Sector as a Probe for New Physics, June 23July 21, 2024 at the Aspen Center for Physics in Aspen, CO USA
The 13th KUTS meeting: "Precision SUSY Higgs Mass Calculation Initiative", June 2628, 2024 at DESY in Hamburg, Germany
The 2024 International Workshop on Future Linear Colliders (LCWS2024), July 811, 2024 at the University of Tokyo in Tokyo, Japan
42nd International Conference on High Energy Physics (ICHEP 2024), July 1724, 2024 in Prague, Czech Republic
Tightening the Gap Between Scattering Amplitudes and Events at the LHC at Higher Orders, August 18September 15, 2024 at the Aspen Center for Physics in Aspen, CO USA p> Workshop on MultiHiggs Models, September 36, 2024 at the Instituto Superior Técnico in Lisbon, Portugal
Higgs Days at Santander 2024, September 913, 2024 in Santander, Spain
Fundamental physics and gravitational wave detectors, September 920, 2024 in the Castello dei Principi Capano, in Pollica (SA), Italy
Ninth International Workshop on High Precision for Hard Processes at the LHC (HP2 2024), September 1013, 2024, hosted by the University of Torino and INFN at Campus Luigi Einaudi, Torino, Italy
Higgs Hunting 2024, September 2325, 2024 at Orsay and Paris, France
A workshop celebrating the careers and achievements of Lawrence Hall and Hitoshi Murayama, September 2628, 2024 at the David Brower Center in Berkeley, CA USA
QCD@LHC, October 711, 2024 in Freiburg, Germany
EFT & MultiLoop Methods for Advancing Precision in Collider and Gravitational Wave Physics, October 731, 2024 at the Munich Institute for Astro, Particle and BioPhysics (MIAPbP) in Garching, Germany
2024 ECFA Workshop on e+e Higgs/EWK/top factories, October 911, 2024 in Paris, France
Extended scalar sectors from all angles, October 2125, 2024 at CERN in Geneva, Switzerland
Higgs 2024, November 48, 2024 in Uppsala, Sweden
The 21st annual workshop of the LHC Higgs Working Group, December 46, 2024 at CERN in Geneva, Switzerland
Navigating new horizons: defining the next era of particle physics, June 227, 2025 at the Munich Institute for Astro, Particle and BioPhysics (MIAPbP) in Garching, Germany
Extended scalar sectors from all angles, October 2125, 2024 at CERN in Geneva, Switzerland
Navigating new horizons: defining the next era of particle physics, June 227, 2025 at the Munich Institute for Astro, Particle and BioPhysics (MIAPbP) in Garching, Germany
Another compilation of upcoming particle physics conferences and workshops can be found here.
Listings of conferences and workshops from previous years are stored here.
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) 19951996 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 ReEntry, is sponsored by the STARS organization on campus, which provides support and counseling for returning (or reentry) students to campus. You can follow our season exploits on the ReEntry 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 ExperimentPublic 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
SM Higgs production cross sections at √s = 13 TeV
SM Higgs Branching Ratios and Total Decay Widths
LHC Higgs 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
HowieFest70, 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 46, 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 1516, 2009
RADCOR 2000, 5th International Symposium on Radiative Corrections, September 1115, 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
National Basketball Association
Weather
XIII. Photographs
Photographs that I have taken at various physics conferences and workshops can be found at this link. Pictures of the ReEntry coed softball team can be found here.
haber@scipp.ucsc.edu
Last Updated: April 6, 2024