This is the professional website of Howard Haber, Professor of Physics at the University of California, Santa Cruz.
RECENT NEWS
January 5, 2018: The 2018 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 19, 2017: A written version of my 2016 TASI Lectures entitled Supersymmetric Theories and Models was posted today as a preprint on the arXiv, thanks to a collaborative effort with my coauthor Laurel Stephenson Haskins. A link to the written version of these lectures can be found in Section II of this website.
November 30, 2017: My talk entitled Replicating the Higgs Doublet, given at Scalars 2017 at the Unversity of Warsaw in Warsaw, Poland, has been posted to Section VII of the academic website.
November 15, 2017: My paper in collaboration with Miguel Bento, J.C. Romao and Joao Silva entitled MultiHiggs doublet models: physical parametrization, sum rules and unitarity bounds was published in the Journal of High Energy Physics (JHEP). A link to this paper can be found in Section II of this website.
In this work, we examine the structure of a Higgs sector consisting of N Higgs doublets. We demonstrate the good features of the socalled charged Higgs basis, which allow us to explicitly identify the physical parameters of the model. We also derive simple forms for the couplings of the Higgs bosons and vector bosons for and some of the Goldstone boson interactions. These results are applied in the derivation of Higgs coupling sum rules and treelevel unitarity bounds that restrict the size of the quartic scalar couplings.
November 6, 2017: My paper in collaboration with Sven Heinemeyer and Tim Stefaniak, entitled The Impact of TwoLoop Effects on the Scenario of MSSM Higgs Alignment without Decoupling, was published in European Physical Journal C. A link to this paper can be found in Section II of this website.
In this work, we assesed the impact of the leading twoloop O(α_{s} h_{t}^{2}) corrections to the Higgs alignment condition in the MSSM. These corrections are sizable and important in the relevant regions of parameter space and furthermore give rise to solutions of the alignment condition that are not present in the approximate oneloop description. The implications for phenomenologically viable regions of the MSSM parameter space were considered.
September 29, 2017: My talk entitled Alignment in Models of Extended Higgs Sectors, given at the NTU workshop: "Energy Frontier in Particle Physics: LHC and Future Colliders" at National Taiwan University in Taipei, Taiwan, has been posted to Section VII of this website.
September 12, 2017: My talk entitled Nonminimal Higgs sectors, given at the GGI Workshop: "Collider Physics and the Cosmos" at the Galileo Galilei Institute for Theoretical Physics in Arcetri, Florence, Italy, has been posted to Section VII of this website.
August 31, 2017: My paper in collaboration with Miguel Bento, J.C. Romao and Joao Silva entitled MultiHiggs doublet models: physical parametrization, sum rules and unitarity bounds, was posted today on the arXiv. A link to this paper can be found in Section II of this website.
In this work, we examine the structure of a Higgs sector consisting of N Higgs doublets. We show that the interactions of the gauge bosons with the physical Higgs scalars and the Goldstone bosons are determined by an N x 2N matrix. This matrix depends on (N1)(2N1) real parameters that are associated with the mixing of the neutral Higgs fields in the socalled charged Higgs basis. Among these parameters, N1 are unphysical (and can be removed by rephasing the physical charged Higgs fields), and the remaining 2(N1)^{2} parameters are physical. We also derive a particularly simple form for the cubic interactions and some of the quartic interactions of the Goldstone bosons with the physical Higgs scalars. These results are applied in the derivation of Higgs coupling sum rules and treelevel unitarity bounds that restrict the size of the quartic scalar couplings.
August 15, 2017: My paper in collaboration with Sven Heinemeyer and Tim Stefaniak, entitled The Impact of TwoLoop Effects on the Scenario of MSSM Higgs Alignment without Decoupling, was posted today on the arXiv. A link to this paper can be found in Section II of this website.
In the Higgs sector of the MSSM, alignment without decoupling is possible only in a parameter regime where there is an accidental cancellation of treelevel and radiative looplevel effects. In this paper we assess the impact of the leading twoloop O(α_{s} h_{t}^{2}) corrections to the Higgs alignment condition in the MSSM. These corrections are sizable and important in the relevant regions of parameter space and furthermore give rise to solutions of the alignment condition that are not present in the approximate oneloop description. We provide a comprehensive numerical comparison of the alignment condition obtained in the approximate oneloop and twoloop approximations, and discuss its implications for phenomenologically viable regions of the MSSM parameter space.
July 16, 2017: In response to a question posed by Joao P. Silva, I have shown that an arbitrary 2n x 2n real orthogonal antisymmetric matrix can be parameterized by n(n−1) continuous angular parameters, and I ave provide an algorithm for constructing the general form for such a matrix in a set of notes entitled Parameterization of real orthogonal antisymmetric matrices. These notes have been posted to Section VI of this website.
June 23, 2017: My paper in collaboration with Stefania Gori and Edward Santos entitled High scale flavor alignment in twoHiggs doublet models and its phenomenology was published in the Journal of High Energy Physics (JHEP). A link to this paper can be found in Section II of this website.
In this paper, we considered the two Higgs doublet model (2HDM) in which flavor alignment is imposed at the Planck scale, resulting in the generation of Higgsmediated FCNCs at the electroweak scale via renormalization group running. Using the current experimental bounds on flavor changing observables, constraints were derived on the aligned 2HDM parameter space, and its implications for Higgs boson phenomenology were analyzed.
June 15, 2017: A set of notes entitled Useful relations among the generators in the defining and adjoint representations of SU(N) has been posted to Section VI of this website.
June 9, 2017: In the Championship game vs. the Bad News Brewskis, ReEntry claimed the Championship Tshirts with a riveting 1511 victory. An eight run second inning provided a big lead early, and ReEntry was able to withstand eight Bad News Brewskis runs over the last three innings, as their comeback fell short by four runs. With this win, ReEntry claims a sweep with two straight softball championships over the 20162017 academic year. For
further details, check out the
UCSC Coed
Softball ReEntry Team Webpage.
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).
The properties of the newly discovered Higgs boson 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. My recent work has advocated the importance of a basisindependent treatment of the 2HDM. Recently, 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.
Link to my most recent preprint:

Supersymmetric Theory and Models
Howard E. Haber, Laurel Stephenson Haskins. Dec 16, 2017. 144 pp.
SCIPP1711
ePrint: arXiv:1712.05926 [hepph]  PDF
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Abstract and PDF from arXiv.org;
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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Abstract and PDF from arXiv.org; Journal Server  JHEP

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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Abstract and Postscript and PDF from arXiv.org; Journal Server  JHEP

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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Abstract and PDF from arXiv.org; Journal Server  Phys.Rev

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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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Abstract and PDF from arXiv.org; Journal Server  JHEP

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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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Abstract and PDF from arXiv.org; Journal Server  Phys.Rev

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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Abstract and PDF from arXiv.org; Journal Server  Phys.Rev

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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Abstract and Postscript and PDF from arXiv.org; Journal Server  Phys.Rev.; Journal Server  Erratumibid.

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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Abstract and Postscript and PDF from arXiv.org; Journal Server  Phys.Rev.
Links to my recent conference proceedings:

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]
Twelve 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
Published version: [PDF]
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. 
Geometric picture of generalizedCP and Higgsfamily transformations in the twoHiggsdoublet model.
P.M. Ferreira (Lisbon, ISEL & Lisbon U., CFTC), Howard E. Haber (UC, Santa Cruz), M. Maniatis, 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. 
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). 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. 
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 References  BibTeX  LaTeX(US)  LaTeX(EU)  Harvmac  EndNote  ADS Abstract Service
 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 References  BibTeX  LaTeX(US)  LaTeX(EU)  Harvmac  EndNote  ADS Abstract Service
 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.
An article on the Higgs boson meant for a broader audience can be found below.
Howard E. Haber (UC, Santa Cruz). Mar 2012.
Published in Physics 5 (2012) 32
DOI: 10.1103/Physics.5.32
Published version: [PDF]
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Journal Server  Physics
The Higgs boson explained in 60 seconds
Howard E. Haber, Symmetry Magazine, volume 3, issue 6 (August, 2006)
[HTML  PDF]
III. Published Reviews

Supersymmetry, Part I (Theory).
Howard E. Haber (UC, Santa Cruz). Sept. 2015. 59 pp.

PDF
from the 2016 edition of the
Particle Data Group Collaboration (C. Patrignani ( Bologna U. & INFN, Bologna) et al.). 2016. 1808 pp.
Published in Chin.Phys. C40 (2016) no.10, 100001
DOI: 10.1088/16741137/40/10/100001
Published version: [PDF]

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Link to Fulltext  PDF from the Particle Data Group website

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 
Twocomponent spinor techniques and Feynman rules for quantum field theory and supersymmetry.
Herbi K. Dreiner (Bonn U.), Howard E. Haber (UC, Santa Cruz), Stephen P. Martin (Northern Illinois U. & Fermilab). Dec 2008. 246 pp.
BNTH200812, SCIPP0808.
Published in Phys.Rept. 494 (2010) 1196
DOI: 10.1016/j.physrep.2010.05.002
Published version: [PDF]
ePrint: arXiv:0812.1594 [hepph]
References
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 Harvmac
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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
References
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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 In *Stanford 1993, Spin structure in high energy processes* 231272
Presented at Conference: C930726
ePrint: hepph/9405376
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Abstract from arXiv.org; KEK scanned document ; CERN Library Record

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]
References
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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 v5 of our review with the (1, +1, +1, +1) metric convention, which should be identical in content in every other respect: DHMspinors_v5.pdf.
The list of known corrections to the Physics Reports version (September 2010) is here: DHM_corr_PhysicsReports.pdf.
The list of known corrections to the arXiv v5 (311 pages, August 2010) is here: DHM_corr_v5.pdf.
Both the (+1,1,1,1) and the (1, +1, +1, +1) metric versions were made
from the single LaTeX file
DHMspinors_v5.tex.
[If you are curious and want to LaTeX this for some reason, you may need
the style files found
here; other packages used should be in most standard LaTeX
distributions.
The choice of metric signature is implemented by simply changing
a single character in the LaTeX file, namely the
argument
of line 16, with \def\signofmetric{0} corresponding
to the (+1,1,1,1) metric and \def\signofmetric{1} to the
(1, +1, +1, +1) metric.]
IV. Published Books
Coauthored books

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 Westview Press 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

References
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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.) (UC, Santa Cruz). 1987.
Published in SINGAPORE, SINGAPORE: WORLD SCIENTIFIC (1987) 497953 
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) 1495
V. Teaching
 Winter, 2018 Physics 215 Introduction to NonRelativistic Quantum Mechanics
 Spring, 2017 Physics 251 Group Theory and Modern Physics
 Winter, 2017 Physics 214 Electromagnetism II
 Winter, 2017 Physics 205 Introduction to Research "Research on the Theory of the Terascale" [PDF  Powerpoint]
 Fall 2016 Physics 217 Quantum Field Theory I
 Winter 2016 Physics 218 Advanced Quantum Field Theory
 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
 Winter, 2011 Physics 116A Mathematical Methods in Physics I
 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
 What is the group of conjugate symplectic matrices? [PDF  PS]
 Parameterization of real orthogonal antisymmetric matrices [PDF  PS]
 Useful relations among the generators in the defining and adjoint representations of SU(N) [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]
 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, 20042017
2017 Conferences and workshops
 Scalars 2017, at the University of Warsaw, in Warsaw, Poland, November 30, 2017 Replicating the Higgs Doublet [PDF]
 Energy Frontier in Particle Physics: LHC and Future Colliders, at National Taiwan University in Taipei, Taiwan, September 29, 2017 Alignment in Models of Extended Higgs Sectors [PDF]
 GGI Workshop: "Collider Physics and the Cosmos", at the Galileo Galilei Institute for Theoretical Physics in Arcetri, Florence, Italy, September 12, 2017 Nonminimal Higgs sectors [PDF]
 The 2nd HARMONIA WarsawLisbonCataniaDresden meeting , at the University of Warsaw, in Warsaw, Poland, May 28, 2017 In search of natural Higgs alignment without decoupling in the 2HDM [PDF]
 PLANCK 2017: 20th International Conference from the Planck Scale to the Electroweak Scale, in Warsaw, Poland, May 22, 2017 Alignment in extended Higgs models [PDF]
 3rd RISE Collaboration Meeting: NonMinimalHiggs, in Toyama, Japan, March 6, 2017 High scale flavoraligned 2HDM [PDF]
 The 3rd Toyama International Workshop on "Higgs as a Probe of New Physics 2017" (HPNP2017), in Toyama, Japan, March 1, 2017 A Theorist's Outlook for Higgs physics beyond the Standard Model [PDF]
 April APS Meeting 2017, in Washington, DC USA, Janurary 30, 2017 Beyond the Standard Model Higgs Boson [Powerpoint]
2016 Conferences and workshops
 Helsinki Higgs Forum, at the Helsinki Institute of Physics in Helsinki, Finland, December 16, 2016 High scale flavor alignment in the 2HDM and its phenomenology [PDF]
 Higgs Couplings 2016, at SLAC, Stanford, CA USA, November 11, 2016 SUSY and the alignment limit [PDF]
 Sixth International Workshop on the Prospects for Charged Higgs Discovery at Colliders (CHARGED 2016), in Uppsala, Sweden, October 6, 2016 Future Higgs Studies: A Theorist's Outlook [PDF]
 Higgs Days at Santander 2016, in Santander, Spain, September 20, 2016 Alignment without decoupling in the MSSM [PDF]
 Workshop on MultiHiggs Models, in Lisbon, Portugal, September 6, 2016 Flavor violation via Planck scale alignment in the 2HDM [PDF]
 Higgs Hunting 2016, in Paris, France, September 2, 2016 Higgs Hunting 2016 Theory Summary Talk [PDF]
 The 24rd International Conference on Supersymmetry and Unification of Fundamental Interactions (SUSY 2016), in Melbourne, Australia, July 6, 2016 Extended Higgs sectors and the alignment limit [PDF]
 KITP Workshop on the Experimental Challenges for the LHC Run II at the Kavli Institute for Theoretical Physics, Santa Barbara, CA, April 18, 2016 Revisiting the 2012 Higgs Wishlist [PDF]
Professional talks at conferences and workshops in previous years are stored here.
Schools and Pedagogical Lectures
 PreSUSY 2016, preceding the 24th International Conference on Supersymmetry and Unification of Fundamental Interactions, Melbourne, Austrailia, 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. 2018 Conferences and workshops in particle physics
7th International conference in High Energy Physics in the LHC Era (Hep2018), January 812, 2018 at the Universidad Técnica Federico Santa María (UTFSM) in Valparaíso, Chile
Sid Drell Symposium, January 12, 2018 at SLAC, in Stanford, CA USA
2018 Zurich Phenomenology Workshop (ZPW2018), Flavours: light, heavy and dark, January 1517, 2018, Zurich, Switzerland
CLIC Workshop 2018, January 2226, 2018 at CERN in Geneva, Switzerland
Eighth KUTS Workshop, January 2426, 2018 at LPTHE in Paris, France
TRIUMF Theory Workshop on New Physics and the Higgs, February 1921, 2018 at TRIUMF in Vancouver, BC, Canada
Dark Matter 2018 (DM18), February 2123, 2018 at UCLA in Los Angeles, CA USA
MITP Workshop: Probing Physics Beyond the Standard Model with Precision, February 26March 9, 2018, at the Mainz Institute for Theoretical Physics, Mainz, Germany
Bay Area Particle Theory Seminar (BAPTS), March 16, 2018 at San Francisco State University (SFSU) in San Francisco, CA
32nd Rencontres de Physique de la Vallée d'Aoste, February 25March 3, 2018, in La Thuile, Aosta Valley, Italy
Conference on Particles and Cosmology, March 59, 2018, atNanyang Technilogical University, Singapore
53nd Rencontres de Moriond EW 2018, March 1017, 2018, in La Thuile, Aosta Valley, Italy
53rd Rencontres de Moriond: QCD and High Energy Interactions, March 1724, 2018, in La Thuile, Aosta Valley, Italy
53rd Rencontres de Moriond: Cosmology 2018, March 1724, 2018, in La Thuile, Aosta Valley, Italy
The 14th Workshop of LHC Higgs Cross Section Working Group, March 2627, 2018 at CERN in Geneva, Switzerland
Aspen Center for Physics Winter Conference on Particle Physics: The Particle Frontier, March 2531, 2018, in Aspen, CO USA
Dark Matter @ LHC 2018, at the University of Heidelberg, Germany
American Physical Society April Meeting, April 1417, 2018, in Columbus, OH USA An Alpine LHC Physics Summit (ALPS 2018), Obergurgl University Center in Tyrol, Austria
The 2018 Phenomenology Symposium, May ??, 2018 at the University of Pittsburg, in Pittsburgh, PA USA
PLANCK 2018: 21th International Conference from the Planck Scale to the Electroweak Scale, May 2125, 2018 in Bonn, Germany
2018 Theoretical Advanced Study Institute (TASI 2018), "Theory in an Era of Data", June 429, 2018 at the University of Colorado in Boulder, CO USA
24rd International Symposium on Particles, Strings and Cosmology (PASCOS 2018), June 48, 2018 in Cleveland, OH, USA
LHCP 2018, the 6th Annual Conference on Large Hadron Collider Physics,June 49, 2018, in Bologna, Italy
XXVIII International Conference on Neutrino Physics and Astrophysics (Neutrino 2018), June 49, 2018, in Heidelberg, Germany
ICHEP 2018, July 411, 2018 in Seoul, South Korea
Cargese 2018 International Summer School, Mass: From the Higgs to Cosmology, July 921, 2018, Institut d'Etudes Scientifiques de Cargese, France
BOOST 2018, July 1620, 2018 at the University of Paris, Jussieu Campus, in Paris, France
17th Annual Prospects in Theoretical Physics (PiTP) summer school, "From Qubits to Spacetime," July 1627, 2017 at the Intitute for Advanced Study (IAS) in Princeton, NJ USA
CERNKorea TH Institute, Physics at the LHC and Beyond, July 16August 10, 2018 at CERN, Geneva, Switzerland
Higgs Hunting 2018, July 2325, 2018 at OrsayParis, France
The 26rd International Conference on Supersymmetry and Unification of Fundamental Interactions (SUSY 2018), July 2328, 2018 in Barcelona, Spain
The Flavor of New Physics in Collisions, July 29August 26, 2018 at the Aspen Center for Physics in Aspen, CO USA
PSI SUmmer School, Particle Flavour Fever, August 1218, 2018, Lyceum Alpinum, Zuoz, Switzerland
GGI Workshop: "Beyond Standard Model: Where do we go from here?", August 20October 5, 2018 at the Galileo Galilei Institute for Theoretical Physics in Arcetri, Florence, Italy
Invisibles18 School, August 2731, 2018, TUM Science & Study Center Raitenhaslach inBurghausen, Germany
Invisibles18 Workshop, September 37, 2018 in Karlsruhe, Germany
Workshop on MultiHiggs Models, September 47, 2018 in Lisbon, Portugal
Higgs Days at Santander 2018, September 1014, 2018 in Santander, Spain
Higgs Coupling Workshop 2018 (HC2018), November 2630, 2018 in Tokyo, Japan
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
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]
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
Journals
Journal of Mathematical Physics
Physical Review Online Archive (PROLA)
Mathematica and Maple links
Mathematics links
Mathematical Association of America
Meetings and Conferences organized by SCIPP Theory
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
Tevatron physics results
Tevatron New Phenomena & Higgs Working Group
TeX and LaTeX links
Selected extracts from the Comprehensive LaTeX Symbol List [PDF]
Using Imported Graphics in LaTeX and pdfLaTeX
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 from the last eleven years can be found here.
haber@scipp.ucsc.edu
Last Updated: January 5, 2018