Howard E. Haber

Howard Haber
Office	ISB 326
Phone	1-831-459-4228
FAX	1-831-459-5265
Address	Department of Physics University of California 1156 High Street Santa Cruz, CA 95064 USA
Office Hours	Mondays 3--4 pm, and Thursdays 2--3 pm
e-mail	haber@scipp.ucsc.edu
alternate e-mail	haber@ucsc.edu

This is the professional website of Howard Haber, Distinguished Professor of Physics at the University of California, Santa Cruz.

RECENT NEWS

January 1, 2026: My paper in collaboration with Guglielmo Coloretti and Andreas Crivellin, entitled Correlating Resonant Di-Higgs and Tri-Higgs Production to H → VV in the 2HDM, was posted today on the arXiv. A link to this paper can be found in Section II of this website.

In the two-Higgs-doublet model (2HDM) with m_H >> m_h, where h is the Higgs boson of mass 125 GeV observed at the LHC, we show that a direct correlation emerges between Br(H → hh) and Br(H → VV), with V = W or Z, which depends only on m_H (and m_V). In particular, for heavy scalar masses between 500 GeV and 1 TeV, we find that Br(H → hh)/Br(H → ZZ) ≈ 9.5. The origin of this prediction is most transparent in the Higgs basis, where the term in the scalar potential proportional to $(H_{1}^{†}$ H₁) $(H_{1}^{†}$ H₂) (and its hermitian conjugate) generates the leading contributions to the Hhh and Hhhh couplings in the decoupling limit of the 2HDM. Moreover, the latter coupling governs the resonant prompt tri-Higgs production via H → hhh, which is also directly correlated to H → hh (and H → VV), and can yield rates large enough to be measured at the High-Luminosity LHC.

December 24, 2025: The 2025 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, 2025 (see news item below). To make it widely accessible, this review was posted on the arXiv today as an update to the 2024 arXiv version. A link to the latest arXiv version of this review can be found in Section II of this website.

December 21, 2025: The 2026 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 3, 2025: Today, I gave the SLAC seminar entitled RG-stable parameter relations in the absence of a conventional symmetry [PDF]

December 1, 2025: The extensive 2025 revision of the Particle Data Group (PDG) review articles is now available on the PDG website. This includes an update to my review (co-authored with Ben Allanach) entitled Supersymmetry, Part I (Theory) [PDF].

November 13, 2025: My talk entitled Celebrating Georg Weiglein@60 at two loops (and beyond), given at BSM Higgs Physics and GW (Georg Fest) at DESY, has been posted to Section VII of the academic website.

November 11, 2025: Today, I gave the DAMTP seminar in Cambridge, UK, entitled RG-stable parameter relations in the absence of a conventional symmetry [PDF]

October 1, 2025: My talk entitled Detecting P-even, CP-violation at future colliders in multiple Higgs boson production, given at the HHH Workshop in Dubrovnik, Croatia, has been posted to Section VII of this website.

September 23, 2025: My talk entitled RG-stable parameter relations of a scalar field theory in absence of a symmetry, given at Scalars Scalars 2025: Higgs bosons and cosmology, at the University of Warsaw, Faculty of Physics in Warsaw, Poland, has been posted to Section VII of this website.

August 20, 2025: The Santa Cruz Institute for Particle Physics is hosting the 32nd annual Conference on Supersymmetry and Unification of Fundamental Interactions, known as SUSY 2025, from August 18--23, 2025. The aim of the conference is to review and discuss recent research related to supersymmetric theories and other approaches to physics beyond the Standard Model in all aspects, including formal theory, phenomenology, experiment, astroparticle physics and cosmology. The SUSY 2025 conference photo was taken today at the end of the morning session.

August 15, 2025: My paper in collaboration with Sergio Carrolo, Luis Lourenco, and Joao P. Silva, entitled Extending the symmetries of the generalized CP-symmetric 2HDM scalar potential to the Yukawa sector, was published today in Physical Review D. A link to this paper can be found in Section II of this website.

There are only six independent types of symmetry-constrained scalar potentials in the two Higgs doublet model (2HDM). For example, the scalar sector symmetry known as Z₂⊗Π₂, generated by the simultaneous application of two independent symmetries acting on the scalar fields, and the generalized CP symmetry known as GCP2 yield equivalent 2HDM scalar potentials. A similar situation arises for the scalar sector symmetries known as U(1)⊗Π₂ and GCP3, respectively. In this paper, we show that this "degeneracy" remains when the definitions of the corresponding symmetries are extended to the Yukawa sector with three quark generations. Moreover, we find that this result is a peculiarity of a Yukawa sector with three quark generations. In particular, with two quark generations, we find that models based on the extension of Z₂⊗Π₂ to the Yukawa sector are inequivalent with those based on GCP2.

August 13, 2025: The Pre-SUSY School 2025 is a week of pedagogical lectures aimed at graduate students and early career postdocs that takes place one week prior to the 2025 Conference on Supersymmetry and Unification of Fundamental Interactions (SUSY-2025). This year's Pre-SUSY school is hosted by the Santa Cruz Institute for Particle Physics from August 11--15, 2025. The Pre-SUSY 2025 group photo was taken today at the end of the morning session.

August 12, 2025: An erratum to my paper in collaboration with Pedro Ferreira, entitled RG-stable parameter relations of a scalar field theory in absence of a symmetry, was published today in The European Physical Journal C. A link to this erratum can be found in Section II of this website.

July 9, 2025: Physics Today published an article today entitled Conference organizers, potential participants fault US policies for falling attendance. A link to this article can be found here. I am quoted twice in the article. The article ends with the following sentences:

The threatened funding cuts will significantly reduce the number of research projects and the number of students and early-career researchers who can enter STEM fields, notes Santa Cruz’s Haber. If they materialize, he says, “it will decimate science research and innovation in the US. It will take a generation to repair.”

June 10, 2025: My talk entitled RG-stable parameter relations of a scalar field theory in absence of a symmetry, given at the 7th International Workshop on "Higgs as a Probe of New Physics" (HPNP2025) at Osaka University, in Osaka, Japan, has been posted to Section VII of this website.

May 20, 2025: Today, I gave the SCIPP seminar entitled RG-stable parameter relations of a scalar field theory in absence of a symmetry [PDF]

May 15, 2025: My paper in collaboration with Pedro Ferreira, entitled RG-stable parameter relations of a scalar field theory in absence of a symmetry, was published today in The European Physical Journal C. A link to this paper can be found in Section II of the academic website.

The stability of tree-level relations among the parameters of a quantum field theory with respect to renormalization group (RG) running is typically explained by the existence of a symmetry. We have examined a toy model of a quantum field theory of two real scalars in which a tree-level relation among the squared-mass parameters of the scalar potential appears to be RG-stable without the presence of a corresponding underlying symmetry. The stability of this parameter relation with respect to RG running can be explained by complexifying the original scalar field theory. It is then possible to exhibit a symmetry that guarantees the relations of relevant beta functions of squared-mass parameters of the complexified theory. We can then show that the RG-stability of the parameter relations of the original real scalar ﬁeld theory is inherited from the symmetry of the corresponding complexiﬁed theory.

May 1, 2025: My talk entitled Higgs physics at future e⁺e^- colliders, given at the Corfu2025 Workshop on Future Accelerators at Mon-Repos in Corfu, Greece, has been posted to Section VII of this website.

April 15, 2025: My paper in collaboration with Sumit Banik, Guglielmo Coloretti, and Andreas Crivellin, entitled Correlating EDMs and A→γγ in the 2HDM in light of the diphoton excesses at 95 GeV and 152 GeV, was published today in Physical Review D. A link to this paper can be found in Section II of this website.

Correlations between Higgs boson decays to photons with electric dipole moments (EDMs) in two-Higgs-doublet models are examined. It is shown that CP-violating effects in the scalar potential can lead to a sizable branching ratio of A (the mainly CP-odd Higgs boson) to photons via a charged Higgs loop. The same CP-violating interaction also generates non-zero EDMs for the electron, the neutron, and the proton. While the proposed mechanism holds in general, we illustrate it for the cases of m_A= 95 GeV and m_A= 125 GeV. In either case, it is found that the corresponding diphoton excess observed at the LHC can be explained via A→γγ while being consistent with the experimental bound for the electron EDM in regions of parameter space that can be tested with future neutron and proton EDM measurements.

March 28 2025: My paper in collaboration with Sergio Carrolo, Luis Lourenco, and Joao P. Silva, entitled Extending the symmetries of the generalized CP-symmetric 2HDM scalar potential to the Yukawa sector, was posted today on the arXiv. A link to this paper can be found in Section II of this website.

March 13, 2025: My presentation to Physics 205 can be found in Section V of this website.

March 10, 2025: The Santa Cruz Institute for Particle Physics (SCIPP) will be hosting the 32nd International Conference on Supersymmetry and Unification of Fundamental Interactions (SUSY 2025) from August 18--23, 2025. In the tradition of past SUSY Conferences, during the week prior to the main SUSY 2025 conference, SCIPP is hosting the Pre-SUSY School 2025, a week of pedagogical lectures aimed at graduate students and early career postdocs from August 11--15, 2025. The webpages for the SUSY 2025 conference and the Pre-SUSY School are now live.

February 28, 2025: Today I posted a short note to Section VI of the academic website entitled The Hamiltonian of a free Majorana fermion field. In these notes, the quantum Hamiltonian of a free Majorana fermion field in 3+1 spacetime dimensions is expressed as a sum over Fourier modes. The full details of the calculation are provided. The computation is presented first using the four-component spinor formalism. The computation is then repeated using the two-component spinor formalism.

February 18, 2025: My paper in collaboration with Pedro Ferreira, entitled RG-stable parameter relations of a scalar field theory in absence of a symmetry, was posted on the arXiv. A link to this paper can be found in Section II of this website.

The stability of tree-level relations among the parameters of a quantum field theory with respect to renormalization group (RG) running is typically explained by the existence of a symmetry. We have examined a toy model of a quantum field theory of two real scalars in which a tree-level relation among the squared-mass parameters of the scalar potential appears to be RG-stable without the presence of an appropriate underlying symmetry. The stability of this relation with respect to RG running can be explained by complexifying the original scalar field theory. It is then possible to exhibit a symmetry that guarantees the relations of relevant beta functions of squared-mass parameters of the complexified theory. Among these relations, we can identify equations that are algebraically identical to the corresponding equations that guarantee the stability of the relations among the squared-mass parameters of the original real scalar field theory where the symmetry of the complexified theory is no longer present.

Listings of older news items are stored here.

I. Research

The basic themes underlying my research program involve the study of: (i) the dynamics responsible for electroweak symmetry breaking; (ii) the theory and phenomenology of Higgs bosons; (iii) TeV-scale supersymmetry as a framework for incorporating a weakly-coupled Higgs sector; (iv) the phenomenology of signals for new physics beyond the Standard Model at the Large Hadron Collider (LHC) and future colliders; and (v) connections of low-energy phenomena with fundamental scales that lie beyond the TeV scale (e.g. lepton number violation and implications for neutrino masses).

After more then ten years after the discovery of the Higgs boson in 2012 at the Large Hadron Collider (LHC), many properties of this spin-zero 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 two-Higgs doublet model (2HDM) is a convenient theoretical laboratory for the study of extended Higgs sectors. Indeed, the two doublet extended Higgs sector is a key component of the simplest supersymmetric extension of the SM.

The theoretical structure and phenomenological profile of the 2HDM has attracted much attention in recent years. Starting with a seminal paper in collaboration with Sacha Davidson published in 2005, my work has advocated the importance of a basis-independent treatment of the 2HDM. During the past few years, I have focused on the relevance of the so-called decoupling and alignment limits of the 2HDM in which one of scalars closely resembles the SM Higgs boson. The basis-independent technology provides a very powerful and simple framework for studying and interpreting these limits.

If new physics beyond the SM emerges at the LHC, it will be essential to develop techniques for measuring new particle interaction strengths at high energy colliders. By detecting relations among various independent couplings, one can ascertain underlying symmetries and distinguish among different theoretical interpretations of the new physics. For example, with sufficient precision, it will be possible to provide convincing evidence for or against a supersymmetric interpretation of new fundamental physics phenomena. A precision Higgs program at the LHC and at a future collider can also provide important clues as to what may lie beyond the Standard Model.

II. Publications

All my profession publications can be found here on the INSPIRE HEP database.

Most of my professional publications since 1992 are stored on the e-print archive hosted by arXiv.org. PDF and Postscript versions of the stored papers can be found here. My top cited publications according to Google Scholar can be found here.

Links to Conference proceedings, 2013--2022:

A natural mechanism for a SM-like Higgs boson in the 2HDM without decoupling
Howard E. Haber. May 17, 2022. 15 pp.
Invited talk at DISCRETE 2020-2021: 7th Symposium on Prospects in the Physics of Discrete Symmetries, November 29--December 3, 2021
Published in PoS(DISCRETE2020-2021)010
Published version: [PDF]
e-Print: arXiv:2205.07578 [hep-ph] | PDF
Detailed record - Cited by 3 records
Approximate Higgs alignment without decoupling
Howard E. Haber. May 15, 2018. 4 pp.
SCIPP 18/03.
Contribution to the Proceedings of the 53th Rencontres de Moriond, QCD Session, 17--24 March 2018
e-Print: arXiv:1805.05754 [hep-ph] | PDF
Detailed record - Cited by 7 records
Future Higgs Studies: A Theorist's Outlook
Howard E. Haber. Jan 8, 2017. 12 pp.
Invited talk at Charged 2016: Prospects for Charged Higgs Discovery at Colliders, 3--6 October 2016
Published in PoS(CHARGED2016)029
Published version: [PDF]
e-Print: arXiv:1701.01922 [hep-ph] | PDF
Detailed record - Cited by 5 records
The Higgs data and the Decoupling Limit
Howard E. Haber. Dec 31, 2013. 15 pp.
SCIPP-13-15.
Published in the Proceedings of the Toyama International Workshop on Higgs as a Probe of New Physics 2013 (HPNP2013) on eConf
e-Print: arXiv:1401.0152 [hep-ph] | PDF
Detailed record - Cited by 67 records

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://ep-news.web.cern.ch/content/higgs-boson-physics-view-ahead

Viewpoint: Higgs Decay into Bottom Quarks Seen at Last
Howard E. Haber (UC, Santa Cruz). Sept 2018.
Published in Physics 11 (2018) 91
DOI: 10.1103/Physics.11.91
Published version: [PDF]

Viewpoint: Homing in on the Higgs Boson
Howard E. Haber (UC, Santa Cruz). Mar 2012.
Published in Physics 5 (2012) 32
DOI: 10.1103/Physics.5.32
Published version: [PDF]
References | BibTeX | LaTeX(US) | LaTeX(EU) | Harvmac | EndNote
Journal Server - Physics

Detailed record

The Higgs boson explained in 60 seconds
Howard E. Haber (UC, Santa Cruz). Aug. 2006.
Published in Symmetry Magazine, volume 3, issue 6 (August, 2006)
URL: https://www.symmetrymagazine.org/article/august-2006/60-seconds-higgs-boson
Published version: [PDF]

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III. Published Reviews

Supersymmetry, Part I (Theory).
Benjamin C. Allanach (Cambridge U., DAMTP), Howard E. Haber (UC, Santa Cruz). Aug. 2023. 53 pp.
Review of Particle Physics (RPP)
Particle Data Group Collaboration (S. Navas et al.). August 2024. 2382 pp.
Published in Phys. Rev. D 110, 030001 (2024)
DOI: doi.org/10.1103/PhysRevD.110.030001
Published version: [PDF]
Particle Data Group (PDG) webpage: [HTML]
Detailed record - Cited by 4012 records

Higgs-mass predictions in the MSSM and beyond
P. Slavich, S. Heinemeyer, E. Bagnaschi, H. Bahl, M. Goodsell, H.E. Haber, et al. Dec 31, 2020. 83 pp.
DESY 20-229, DESY-20-229, IFT-UAM/CSIC-20-184, FR-PHENO-2020-021, KA-TP-23-2020, MPP-2020-235, KA-TP-23-2020, MPP-2020-235, P3H-20-086, TTK-20-53
Published in Eur.Phys.J. C81 (2021) 450
DOI: 10.1140/epjc/s10052-021-09198-2
Published version: [PDF]
e-Print: arXiv:2012.15629 [hep-ph] | PDF
Detailed record - Cited by 120 records

Supersymmetric Theory and Models
Howard E. Haber, Laurel Stephenson Haskins. Dec 16, 2017. 144 pp.
SCIPP-17-11
Conference: C16-06-06.15, pp. 355--499 Proceedings
Published in Chapter 6 of TASI 2016: Anticipating the Next Discoveries in Particle Physics, edited by Rouven Essig and Ian Low (World Scientific, Singapore, 2018).
DOI: 10.1142/9789813233348_0006
e-Print: arXiv:1712.05926 [hep-ph] | PDF
Detailed record - Cited by 33 records

ILC Higgs White Paper
D.M. Asner, T. Barklow, C. Calancha, K. Fujii, N. Graf, H.E. Haber, A. Ishikawa, S. Kanemura, S. Kawada, M. Kurata et al.. Oct 23, 2013. 152 pp.
e-Print: arXiv:1310.0763 [hep-ph] | PDF
Detailed record - Cited by 428 records

Geometric picture of generalized-CP and Higgs-family transformations in the two-Higgs-doublet model.
P.M. Ferreira (Lisbon, ISEL & Lisbon, IST), Howard E. Haber (UC, Santa Cruz), M. Maniatis (Heidelberg U.), O. Nachtmann (Heidelberg U.), Joao P. Silva (Lisbon, ISEL & Lisbon, IST). Oct 2010. 31 pp.
SCIPP-10-15, HD-THEP-10-1.
Published in Int.J.Mod.Phys. A26 (2011) 769-808
DOI: 10.1142/S0217751X11051494
Published version: [PDF]
e-Print: arXiv:1010.0935 [hep-ph]
Detailed record - Cited by 69 records

Two-component spinor techniques and Feynman rules for quantum field theory and supersymmetry.
Herbi K. Dreiner, Howard E. Haber, Stephen P. Martin. Dec 2008. 246 pp.
BN-TH-2008-12, SCIPP-08-08.
Published in Phys.Rept. 494 (2010) 1-196
DOI: 10.1016/j.physrep.2010.05.002
Published version: [PDF]
Corrected version of the published review with a few enhancements, with the mostly minus metric [PDF]
Corrected version of the published review with a few enhancements, with the mostly plus metric [PDF]
e-Print: arXiv:0812.1594 [hep-ph]
Detailed record - Cited by 643 records

Webpage for Two-component spinor techniques and Feynman rules for quantum field theory and supersymmetry, maintained by Stephen P. Martin. Both the arXiv version and the Physics Reports version use the spacetime metric signature (+1,-1,-1,-1), as is found for example in the field theory textbooks by Ramond, and by Peskin and Schroeder . However, many people including one of the authors (S.P. Martin) prefer the metric signature (-1, +1, +1, +1), as is found for example in the textbooks by Weinberg, by Wess and Bagger, by Srednicki, and in Martin's Supersymmetry Primer. Here is a PDF file of v6 of our review with the (-1, +1, +1, +1) metric convention, which should be identical in content in every other respect: DHMspinors_v6.pdf.

Both the (+1,-1,-1,-1) and the (-1, +1, +1, +1) metric versions were made from the same source files available from the arXiv. The choice of metric signature is implemented by simply changing a single character in the main LaTeX source file, namely the argument of line 20, with \def\signofmetric{0} corresponding to the (+1,-1,-1,-1) metric and \def\signofmetric{1} to the (-1, +1, +1, +1) metric. Note that the pdf file is produced with pdflatex.

The list of known corrections to the Physics Reports version as of May 2022 is here: DHM_corr_PhysicsReports.pdf.

These corrections have all been implemented (along with some additional enhancements) and can be found in version 6 of arXiv:0812.1594 (313 pages, May 2022). Any subsequent corrections to version 6 of arXiv:0812.1594 will be posted on https://www.niu.edu/spmartin/spinors/.

Higgs boson theory and phenomenology.
Marcela Carena (Fermilab), Howard E. Haber (UC, Santa Cruz). Aug 2002. 87 pp.
hep-ph/0208209,FERMILAB-PUB-02-114-T, SCIPP-02-07.
Published in Prog.Part.Nucl.Phys. 50 (2003) 63-152
DOI: 10.1016/S0146-6410(02)00177-1
Published version: [PDF]
e-Print: hep-ph/0208209
Detailed record - Cited by 614 records

Spin formalism and applications to new physics searches.
Howard E. Haber (UC, Santa Cruz & Santa Barbara, KITP). Apr 1994. 83 pp.
hep-ph/9405376, SCIPP-93-49, NSF-ITP-94-30, C93-07-26.
Published in Stanford 1993, Spin structure in high energy processes, pp. 231-272
Presented at Conference: C93-07-26
e-Print: hep-ph/9405376
Postscript and PDF from this website.

Detailed record - Cited by 145 records

Lectures on electroweak symmetry breaking.
Howard E. Haber (UC, Santa Cruz). Mar 1991. 136 pp.
SCIPP-91-06
Invited lectures given at Conference: C90-06-03 (Boulder TASI 90:340-475), p.340-475
PDF from this website.

Detailed record - Cited by 1 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.
UM-HE-TH-83-17, SCIPP-85-47.
Published in Phys.Rept. 117 (1985) 75-263
DOI: 10.1016/0370-1573(85)90051-1
Published version: [PDF] [Erratum]
Detailed record - Cited by 5589 records

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IV. Published Books

Co-authored books

From Spinors to Supersymmetry.
Herbi K. Dreiner, Howard E. Haber, Stephen P. Martin. Jun 2023. 1009 pp.
Detailed record - Cited by 18 records

Cited by 46 Google Scholar records

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.
SCIPP-89/13, UCD-89-4, BNL-41644.
Published in Front. Phys. 80 (2000) 1-448
Detailed record - Cited by 1336 records

Cited by 5164 Google Scholar records

Link to The Higgs Hunter's Guide at the Perseus Books webpage. See also the Routledge (member of Taylor & Francis Group) webpage.

Errata for The Higgs hunter's guide.
John F. Gunion (UC, Davis), Howard E. Haber (UC, Santa Cruz), Gordon L. Kane (Michigan U.), Sally Dawson (Brookhaven). Dec 1992. 5 pp.
hep-ph/9302272, SCIPP-92-58.
e-Print: hep-ph/9302272

Detailed record - Cited by 194 records TopCite

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 3-28, 2002.
H.E. Haber, (ed.) (UC, Santa Cruz), A.E. Nelson, (ed.) (Washington U., Seattle). 2004. 892 pp.
ISBN-9789812388926.
Prepared for Conference: C02-06-02.1 (River Edge, USA: World Scientific (2004) 892 p)
Detailed record - Cited by 2 records

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)
Detailed record - Cited by 3 records

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) 497-953
Detailed record

Link 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) 1-495
Detailed record

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

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V. Teaching

Winter, 2026 Physics 214 Electromagnetism II
Winter, 2025 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 Non-Relativistic Quantum Mechanics
Fall 2016 Physics 217 Quantum Field Theory I
Winter 2016 Physics 218 Quantum Field Theory II
Fall, 2015 Physics 171 General Relativity, Black Holes, and Cosmology
Fall, 2012 Physics 116C Mathematical Methods in Physics III
Spring, 2012 Physics 216 Advanced Topics in Non-Relativistic Quantum Mechanics
Fall, 2009 Physics 139B Quantum Mechanics II
Winter, 2009 Physics 5B Introduction to Physics II
Winter, 2000 Physics 112 Thermodynamics and Statistical Mechanics

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VI. Notes and other writings

The Hamiltonian of a free Majorana fermion ﬁeld [PDF | PS]
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 Barr-Zee 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 Passarino-Veltman function B₀(p²;m₁²,m₂²) [PDF | PS]
Evaluating the one-loop function arising in h→γγ [PDF | PS]
Analytic formulae for the Feynman propagator in coordinate space [PDF | PS]
A Tale of Three Diagonalizations [PDF | PS]
Notes on the Matrix Exponential and Logarithm [PDF | PS]
The characteristic polynomial [PDF | PS]
What is the group of conjugate symplectic matrices? [PDF | PS]
Parameterization of real orthogonal antisymmetric matrices [PDF | PS]
Toward a set of 2HDM benchmarks [PDF | PS]
The eigenvalues of the quadratic Casimir operator and second-order indices of a simple Lie algebra [PDF | PS]
Notes on basis changes and matrix diagonalization [PDF | PS]
Notes on the complex inverse trigonometric and hyperbolic functions and their principal values [PDF | PS]
Electron wave function and mass renormalization in QED [PDF | PS]
Proof of a trace inequality in matrix algebra [PDF | PS]
Notes on the spontaneous breaking of SU(N) and SO(N) via a second-rank tensor multiplet [PDF | PS]
Notes on antisymmetric matrices and the pfaffian [PDF | PS]
Complex representation of scalar fields and the embedding of U(n) in SO(2n) [PDF | PS]
The probability that a product of random numbers is less than a fixed constant [PDF | PS]
Massless Majorana and Weyl fermions cannot be distinguished [PDF | PS]

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VII. Talks at conferences, workshops and schools, 2004--2025

2025 Conferences and workshops

Corfu2025 Workshop on Future Accelerators, at the Corfu Summer School and Workshops on Elementary Particle Physics and Gravity, in Mon-Repos, Corfu, Greece, May 1, 2025 Higgs physics at future e⁺e^- colliders [PDF]

The 7th International Workshop on "Higgs as a Probe of New Physics" (HPNP2025), at Osaka University, in Osaka, Japan, June 10, 2025 RG-stable parameter relations of a scalar field theory in absence of a symmetry [PDF]

Scalars 2025, at the University of Warsaw in Warsaw, Poland, September 23, 2025 RG-stability of parameter relations in the absence of a conventional symmetry [PDF]

HHH Workshop 2025, at IUC Dubrovnik, Croatia, October 1, 2025 Detecting P-even, CP-violation at future colliders in multiple Higgs boson production [PDF]

BSM Higgs Physics and GW (Georg Fest) at DESY in Hamburg, Germany, November 13, 2025 Celebrating Georg Weiglein@60 at two loops (and beyond) [PDF]

2024 Conferences and workshops

Cosmology, Astrophysics, Theory and Collider Higgs 2024 (CATCH22+2), at the Dublin Institute for Advanced Study (DIAS), in Dublin, Ireland, May 1, 2024 Classes of complete dark photon models constrained by Z Physics [PDF]

PLANCK 2024: 26th International Conference from the Planck Scale to the Electroweak Scale, In Lisbon, Portugal, June 5, 2024 Flavor-nondiagonal neutral Higgs Yukawa couplings revisited [PDF]

31st International Conference on Supersymmetry and Unification of Fundamental Interactions: Theory meets Experiment (SUSY 2024), in Madrid, Spain, June 10, 2024 Classes of complete dark photon models constrained by Z Physics [PDF]

2024 Workshop on Multi-Higgs Models, at the Instituto Superior Técnico in Lisbon, Portugal, September 3, 2024 Flavor-nondiagonal neutral Higgs Yukawa couplings revisited [PDF]

Extended scalar sectors from all angles, at CERN in Geneva, Switzerland, October 25, 2024 Flavor-nondiagonal neutral Higgs Yukawa couplings revisited [PDF]

2023 Conferences and workshops

"Herbi Fest"--Pursuing Physics Beyond the Standard Model: a symposium in honor of Herbi Dreiner on the occasion of his 60th birthday, at the Bethe Center for Theoretical Physics, University of Bonn, in Bonn, Germany, March 28, 2023 Adventures from spinors to SUSY [PDF]

International Workshop on Future Linear Colliders (LCWS2023), at SLAC National Accelerator Laboratory in Menlo Park, CA USA, May 17, 2023 P-even, CP-violating Signals in Scalar-Mediated Processes [PDF]

PLANCK 2023: 25th International Conference from the Planck Scale to the Electroweak Scale, at the University of Warsaw in Warsaw, Poland, May 22, 2023 Higgs Boson Physics—The View Ahead [PDF]

Beyond the SM from Colliders to the Early Universe: a symposium in honor of Marcela Carena and Carlos Wagner on the occasion of their 60th birthdays, at the University of Chicago in Chicago, IL USA and at Fermilab in Batavia, IL USA, May 28, 2023 My Journey through Physics with Marcela and Carlos [PDF]

The 6th International Workshop on "Higgs as a Probe of New Physics" (HPNP2023), at Osaka University, in Osaka, Japan, June 5, 2023 Signals of new heavy scalars in the flavor-aligned 2HDM [PDF]

pre-SUSY school 2023, at the University of Southampton, in Southampton, England, July 13, 2023 Supersymmetry and Higgs Physics [PDF]

The XXX International Conference on Supersymmetry and Unification of Fundamental Interactions (SUSY 2023), at the University of Southampton, in Southampton, England, July 21, 2023 Supersymmetry Confronts a SM-Like Higgs Boson [PDF]

Higgs Days at Santander 2023, in Santander, Spain, September 6, 2023 Signals of new heavy scalars in the flavor-aligned 2HDM [PDF]

Scalars 2023, at the University of Warsaw in Warsaw, Poland, September 13, 2023 Scalar revelations at future e⁺e^- colliders [PDF]

2022 Conferences and workshops

The XXIX International Conference on Supersymmetry and Unification of Fundamental Interactions (SUSY 2022), at the University of Ioannina in Ioannina, Greece, June 29, 2022 The anapole moment of a charged lepton in softly-broken Supersymmetric QED [PDF]

Workshop on Multi-Higgs Models , at the Instituto Superior Técnico in Lisbon, Portugal, August 30, 2022 P-even, CP-violating Signals in Scalar-Mediated Processes [PDF]

IDT-WG3-Phys Open Meeting, online via zoom, November 17, 2022 P-even, CP-violating Signals in Scalar-Mediated Processes [PDF]

2021 Conferences and workshops

The 5th International Workshop on "Higgs as a Probe of New Physics Special Edition 2021" (HPNP2021), in Osaka, Japan (held online), March 27, 2021 Exceptional regions of the 2HDM parameter space [PDF]

49th SLAC Summer Institute (SSI 2021), at SLAC, Stanford, CA USA (held online), August 27, 2021 Higgs Boson Physics—The View Ahead [PDF]

Charged Higgs Online Workshop, August 30, 2021 Extended Higgs sector at present and future colliders [PDF]

DISCRETE 2020-2021, December 3, 2021 A natural mechanism for a SM-like Higgs boson in the 2HDM without decoupling [PDF]

Professional talks at conferences and workshops in previous years are stored here.

Schools and Pedagogical Lectures

pre-SUSY school 2023, at the University of Southampton, in Southampton, England, July 13, 2023 Supersymmetry and Higgs Physics [PDF]

49th SLAC Summer Institute (SSI 2021), at SLAC, Stanford, CA USA (held online), August 27, 2021 Higgs Boson Physics—The View Ahead [PDF]

Sorak Symposium reminiscence on Particle Physics, at NakSan Beach Hotel in Yang Yang, South Korea, August 15, 2019 The incomplete and biased history of the Higgsboson [PDF]

Sorak Symposium reminiscence on Particle Physics, at NakSan Beach Hotel in Yang Yang, South Korea, August 15, 2019 Quo Vadis Higgs (or what the current Higgs data is trying to tell us) [PDF]

The 46th SLAC Summer Institute--Standard Model at 50: Successes and Challenges, at SLAC in Stanford, CA USA, August 6, 2018 The woefully incomplete, unabashedly biased history of the Higgs Boson [PDF]

Pre-SUSY 2016, preceding the 24th International Conference on Supersymmetry and Unification of Fundamental Interactions, Melbourne, Australia, 27 June--July 8, 2016 SM and SUSY Higgs [Lecture 1 | Lecture 2 | Lecture 3]

2016 Theoretical Advanced Study Institute (TASI 2016), 6 June--1 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 July--3 August 2012, Electroweak Symmetry Breaking (EWSB): The Basics [Lecture 1 | Lecture 2]

Idpasc Higgs School, Foz do Arelho, Portugal, 6--9 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, 19--21 August, 2010, Two-component Spinor Formalism: practical methods for treating Majorana fermions [PDF]

Spaatind 2010: Nordic Conference in Particle Physics Spaatind 2010, Spaatind, Norway, 2--8 January 2010, Introduction to Electroweak Symmetry Breaking [PDF]; Two-component spinor formalism [PDF]

Collider Phenomenology, DESY Theory Workshop, DESY Hamburg, Germany, 29 September--1 October 2009 Introduction to Electroweak Symmetry Breaking [PDF]SMay 19

The CERN--Fermilab 2008 Hadron Collider Physics Summer School, Fermilab, August 12--22, 2008, Higgs Boson Theory and Phenomenology [PDF]

Pre-SUSY 2005, preceding the 13th International Conference on Supersymmetry and Unification of Fundamental Interactions, IPPP Durham, 29 June--July 15, 2005 Practical methods for treating Majorana fermions [PDF]

PSI Zuoz Summer School on Particle Physics, Zuoz, Switzerland, 15--21 August, 2004 Introduction to Supersymmetry [Lecture 1 |Lecture 2| Lecture 3| Lecture 4]

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VIII. 2026 Conferences and workshops in particle physics

New Directions in Theoretical Physics 5, January 6--9, 2026 at the Higgs Centre for Theoretical Physics in Edinburgh, Scotland

Linear Collider@CERN Workshop 2026, January 7--9, 2026 at CERN in Geneva, Switzerland

High Energy, Cosmology, and Astroparticle Physics Conference, January 13--15, 2026 at the NYU Abu Dhabi Institute in Abu Dhabi, United Arab Emirates

Workshop: Model Building in 2030, January 20--23, 2026 at the Princeton Institute for Advanced Study, School of Natural Sciences, in Princeton, NJ USA

Celebrating 60 years of Rencontres de Moriond, January 16--17, 2026 at the Institut Pierre-Simon Laplace in Paris, France

The Aspen Winter Conference: Paving the Way to New Discoveries in Particle Physics, February 1--6, 2026 at the Aspen Center for Physics in Aspen, CO USA

The Aspen Winter Conference: Generalized Symmetries and Defects in QFT and Gravity, February 8--13, 2026 at the Aspen Center for Physics in Aspen, CO USA

Gender in High Energy Theory (GenHET) Meeting in Beyond the Standard Model, February 25--27, 2026 at CERN in Geneva, Switzerland

The APS Global Physics Summit, March 15--20, 2026 in Denver, CO USA

60th Rencontres de Moriond--Electroweak Interactions & Unified Theories, March 15--22, 2026 in La Thuile, Italy

60th Rencontres de Moriond--QCD & High Energy Interactions, March 22--29, 2026 in La Thuile, Italy

The 15th KUTS meeting: "Precision SUSY Higgs Mass Calculation Initiative" (KUTS15), March 23--26, 2026 at the Karlsruhe Institute of Technology (KIT) in Karlsruhe, Germany

Bay Area Particle Theory Seminar (BAPTS), April 3, 2026 at San Francisco State University (SFSU) in San Francisco, CA USA

SM@LHC 2026: Workshop on the Standard Model at the LHC, April 7--10, 2026 in Torino, Italy

Precision Lepton Physics: a window to new physics, April 7--30, 2026, at the Munich Institute for Astro-, Particle and BioPhysics (MIAPbP) in Garching, Germany

Loops and Legs in Quantum Field Theory: 18th Workshop on Elementary Particle Physics, April 12--17, 2026 in Bayreuth, Gemrany

Corfu2026 Workshop on Future Accelerators, April 19--26, 2026 at the Corfu Summer School and Workshops on Elementary Particle Physics and Gravity, in Mon-Repos, Corfu, Greece

Cosmological Frontiers in Fundamental Physics, April 27--29, 2026 at the Perimeter Institute for Theoretical Physics in Waterloo, Ontario, Canada

Electroweak Corrections at Current and Future Accelerators, May 4--8, 2026 at the Mainz Institute for Theoretical Physics (MITP), Johannes Gutenberg University Mainz, in Mainz, Germany

Phenomenology 2026 Symposium (PHENO 2026), May 11--13, 2025 at the University of Pittsburgh and Carnegie Mellon University in Pittsburgh, PA USA

Pre-SUSY School 2026, May 12--15, 2026 at the University of Oklahoma in Norman, OK USA

The Fourteenth Annual Large Hadron Collider Physics (LHCP2026) conference, May 18--22, 2026 in Paris France

PLANCK2026: The 28th International Conference from the Planck Scale to the Electroweak Scale and the 6th EuCAPT Symposium, May 18--22, 2026 at CERN in Geneva, Switzerland

33nd International Conference on Supersymmetry and Unification of Fundamental Interactions (SUSY 2026), May 18--22, 2026 at the University of Oklahoma in Norman, OK USA

LoopFest XXIV, May 27--29, 2026 at Brookhaven National Laboratory in Upton, NY 11973 USA

TedFest 2026, May 28--29, 2026 at the University of Maryland, College Park, in College Park, MD USA

Extended Scalar Sectors from all Angles, June 1--5, 2026 at CERN in Geneva, Switzerland

Higgs and Effective Field Theory (HEFT 2026), June 8--12, 2026 in Jardi Botanic, Valencai, Spain

New Synergies: Crafting the Next Generation Narrative for Cosmology and Particle Physics, June 14--July 5, 2026 at the Aspen Center for Physics in Aspen, CO USA

2026 IMCC Annual Meeting, June 22--26, 2026 at CERN in Geneva, Switzerland

The 31st International Symposium on Particles, Strings, and Cosmology (PASCOS 2026), June 22--26, 2026 in Sheffield, UK

XXXII International COnference on Neutrino Physics and Astrophysics, June 22--26, 2026 at the University of California, Irvine in Irvine, CA USA

Lancefest: Adventures in Particle Scattering, June 24--26, 2026 at the Higgs Centre for Theoretical Physics in Edinburgh, Scotland

Gearing up for Future Colliders--Workshop on Radiative Corrections at Future Lepton Colliders, June 29--July 3, 2026 at CERN in Geneva, Switzerland

From First Principles to Future Colliders: Amplitudes, Bootstraps and Energy Correlators, July 12--August 2, 2026 at the Aspen Center for Physics in Aspen, CO USA

The 2026 APS Division of Particles and Fields (DPF) meeting, July 20--24, 2026 at Fermilab in Batavia, IL USA

The 43rd International Conference on High Energy Physics (ICHEP 2026), July 30--August 5, 2026 in Natal, Brazil

Invisibles 26, August 10--14, 2026 in Cantón Grande, 8, A Coruña, 15003, Spain

Corfu2026 Workshop on the Standard Model and Beyond, August 23--September 1, 2026 at the Corfu Summer School and Workshops on Elementary Particle Physics and Gravity, in Mon-Repos, Corfu, Greece

29th International Conference on Particle Physics and Cosmology (COSMO-26), August 24--28, 2026 at Leiden University, in Leiden, Netherlands

Higgs Days at Santander 2026, September 7--11, 2026 in Santander, Spain

Fourth US FCC Meeting, September 9--11, 2026 at the SLAC National Accelerator Laboratory in Menlo Park, CA USA

Higgs Hunting 2026, September 16--18, 2026 at Orsay and Paris, France

Higgs@GGI 2026, Spetember 28--October 23, 2026, at the Galileo Galilei Institute in Arcetri, Florence, Italy

Higgs 2026, October 26--30, 2026 in Louvain-la-Neuve, Belgium

2026 USMCC Annual Meeting December 13--15, 2026 at SLAC National Accelecrator Laboratory in Menlo Park, CA USA

Another compilation of upcoming particle physics conferences and workshops can be found here.

Listings of conferences and workshops from previous years are stored here.

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IX. University Service

Faculty Perceptions of a UCSC Research Environment in Need of Restoration and Improvement, a report by Howard E. Haber and David M. Harrington, sponsored by the UCSC Committee on Research and contributed in May, 1998 to the Advisory Report of the Millennium Committee. [HTML]

University Committee on Research Policy (UCORP) 1995--1996 Public web page.

Should UC renew its contract with the Department of Energy (DOE) to manage the Lawrence Livermore National Laboratory and Los Alamos National Laboratory? The following web page documents the 1996 UC systemwide campus debate on this question. A town meeting was held on the UCSC campus on March 7, 1996 to discuss these issues.

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X. Extracurricular Activities

Some of the physics students and I play softball in the UCSC intramural coed softball league. The fall season runs from early October to early December, and the spring season runs from early April to early June.

Our team, called Re-Entry, is sponsored by the STARS organization on campus, which provides support and counseling for returning (or re-entry) students to campus. You can follow our season exploits on the Re-Entry Team Webpage.

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XI. Physics, Math and Computer Links

Book Price comparisons

BookFinder.com book search

CERN links

Future Circular Collider

Large Hadron Collider (LHC)

LHC Physics Centre at CERN

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 Documents

ATLAS Experiment--Public results

ATLAS Higgs Physics results

ATLAS Supersymmetry Physics results

CMS Documents

CMS Physics results

CMS Higgs Physics results

Higgs PAG Summary Plots

CMS Supersymmetry Physics results

Electroweak and Higgs precision observables

LEP Electroweak Working Group

LEP Higgs Working Group

GFITTER

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

arXiv preprint server

High Energy Physics Software and Collider Tools

International Linear Collider

American Linear Collider Working Group

International Linear Collider (ILC) homepage

ILC Technical Design Report

CLIC detector and physics study (CLICdp)--WG Physics Potential

Compact Linear Collider (CLIC)

Journals

European Physics Journal C

JHEP

Journal of Mathematical Physics

Nuclear Physics B

Physical Review Online Archive (PROLA)

Physics Letters B

Physics Reports

Mathematics links

Mathematical Association of America

Table of integrals

Meetings and Conferences organized by SCIPP Theory

Howie-Fest-70, February 7, 2022 at the University of California, Santa Cruz, CA USA (held online)

SCIPP Reunion Theory Symposium, April 24, 2015 at the University of California, Santa Cruz

The search for Fundamental Physics: Higgs Bosons & Supersymmetry, A symposium in honor of Michael Dine and Howard Haber on the occasion of their 60th Birthdays, January 4--6, 2013

West Coast LHC Theory meeting, May 21, 2010

Confronting Challenges in Theoretical Physics, A Symposium in Honor of Tom Banks and Willy Fischler on the Occasion of their 60th Birthdays June 15--16, 2009

RADCOR 2000, 5th International Symposium on Radiative Corrections, September 11--15, 2000

Particle physics outreach

The Particle Adventure

Hands on CERN

Physikshow at the University of Bonn

Particle physics jobs

Theoretical Particle Physics Jobs Rumor Mill

High Energy Physics Postdoc Rumor Mill

Physics blogs

Asymptotia

BackReAction

Cosmic Variance

Life and Physics

Of Particular Significance

Quantum Diaries

A Quantum Diaries Survivor

Resonaances

viXra log

Physics links

Division of Particles and fields of the APS

DPF Newsletter

American Physical Society

Professional publishers

EPJC Manuscript Central

ScienceDirect

SpringerLink

Search links

Google Books

Google Scholar

Snowmass 2021 links

The Particle Physics Community Planning Exercise

Energy Frontier

Theory Frontier

Tevatron physics results

Tevatron New Phenomena & Higgs Working Group

TeX and LaTeX links

The TeX Catalog Online

Selected extracts from the Comprehensive LaTeX Symbol List [HTML | [PDF]

Using Imported Graphics in LaTeX and pdfLaTeX [PDF]

XII. Miscellaneous links of interest

Humor

Piled Higher and Deeper (Ph.D. Comics)

Sports

ESPN

Major League Baseball

National Football League

National Basketball Association

National Hockey League

San Francisco Giants

San Francisco 49ers

San Jose Sharks

Golden State Warriors

Weather

AccuWeather.com

The Weather Channel

The Weather Underground

XIII. Photographs

Photographs that I have taken at various physics conferences and workshops can be found at this link. Pictures of the Re-Entry coed softball team can be found here.

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haber@scipp.ucsc.edu
Last Updated: February 6, 2026

Table of Contents

Contact Information

Howard Haber

Quick Links

UCSC Links

SCIPP Links

Most recent teaching

Local seminars and colloquia

From Spinors to Supersymmetry

TeX and LaTeX Links

Mathematica and Maple Links

High Energy Physics Links

Aspen Links

Santa Cruz Links

Stanford Links

Berkeley Links

KITP Links

CERN Links

Bonn Links

Particle Physics Outreach Links

Higgs Boson Links

Political Action

Softball Links

Bicycle Links

The Higgs Boson Re-explained

The UCSC Home Page of Howard E. Haber

This is the professional website of Howard Haber, Distinguished Professor of Physics at the University of California, Santa Cruz.

RECENT NEWS

January 1, 2026: My paper in collaboration with Guglielmo Coloretti and Andreas Crivellin, entitled Correlating Resonant Di-Higgs and Tri-Higgs Production to H → VV in the 2HDM, was posted today on the arXiv. A link to this paper can be found in Section II of this website.

December 21, 2025: The 2026 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 3, 2025: Today, I gave the SLAC seminar entitled RG-stable parameter relations in the absence of a conventional symmetry [PDF]

December 1, 2025: The extensive 2025 revision of the Particle Data Group (PDG) review articles is now available on the PDG website. This includes an update to my review (co-authored with Ben Allanach) entitled Supersymmetry, Part I (Theory) [PDF].

November 13, 2025: My talk entitled Celebrating Georg Weiglein@60 at two loops (and beyond), given at BSM Higgs Physics and GW (Georg Fest) at DESY, has been posted to Section VII of the academic website.

November 11, 2025: Today, I gave the DAMTP seminar in Cambridge, UK, entitled RG-stable parameter relations in the absence of a conventional symmetry [PDF]

September 23, 2025: My talk entitled RG-stable parameter relations of a scalar field theory in absence of a symmetry, given at Scalars Scalars 2025: Higgs bosons and cosmology, at the University of Warsaw, Faculty of Physics in Warsaw, Poland, has been posted to Section VII of this website.

August 12, 2025: An erratum to my paper in collaboration with Pedro Ferreira, entitled RG-stable parameter relations of a scalar field theory in absence of a symmetry, was published today in The European Physical Journal C. A link to this erratum can be found in Section II of this website.

July 9, 2025: Physics Today published an article today entitled Conference organizers, potential participants fault US policies for falling attendance. A link to this article can be found here. I am quoted twice in the article. The article ends with the following sentences:

June 10, 2025: My talk entitled RG-stable parameter relations of a scalar field theory in absence of a symmetry, given at the 7th International Workshop on "Higgs as a Probe of New Physics" (HPNP2025) at Osaka University, in Osaka, Japan, has been posted to Section VII of this website.

May 20, 2025: Today, I gave the SCIPP seminar entitled RG-stable parameter relations of a scalar field theory in absence of a symmetry [PDF]

May 15, 2025: My paper in collaboration with Pedro Ferreira, entitled RG-stable parameter relations of a scalar field theory in absence of a symmetry, was published today in The European Physical Journal C. A link to this paper can be found in Section II of the academic website.

May 1, 2025: My talk entitled Higgs physics at future e+e- colliders, given at the Corfu2025 Workshop on Future Accelerators at Mon-Repos in Corfu, Greece, has been posted to Section VII of this website.

March 13, 2025: My presentation to Physics 205 can be found in Section V of this website.

February 18, 2025: My paper in collaboration with Pedro Ferreira, entitled RG-stable parameter relations of a scalar field theory in absence of a symmetry, was posted on the arXiv. A link to this paper can be found in Section II of this website.

Listings of older news items are stored here.

I. Research

II. Publications

All my profession publications can be found here on the INSPIRE HEP database.

Links to my most recent preprints:

Links to my 2025 publications:

Links to my 2024 publications:

Links to my 2023 publications:

Links to my 2022 publications:

Links to my 2021 publications:

Links to my 2020 publications:

Links to my 2019 publications:

Links to my 2018 publications:

Links to my 2017 publications:

Links to my 2016 publications:

Links to my 2015 publications:

Twelve selected publications published from 2005--2014 are listed below.

My three most highly cited papers (not including reviews) are listed below.

Links to Conference proceedings, 2013--2022:

Articles on the Higgs boson meant for a broader audience can be found below.

III. Published Reviews

IV. Published Books

Co-authored books

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.

Link to The Higgs Hunter's Guide at the Perseus Books webpage. See also the Routledge (member of Taylor & Francis Group) webpage.

Edited books

Link to Particle Physics and Cosmology webpage at World Scientific Publishing.

Link to Electroweak Symmetry Breaking and New Physics at the TeV Scale webpage at World Scientific Publishing.

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

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

V. Teaching

VI. Notes and other writings

VII. Talks at conferences, workshops and schools, 2004--2025

2025 Conferences and workshops

2024 Conferences and workshops

May 1, 2025: My talk entitled Higgs physics at future e⁺e^- colliders, given at the Corfu2025 Workshop on Future Accelerators at Mon-Repos in Corfu, Greece, has been posted to Section VII of this website.