Table of Contents


Contact Information

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 and Tuesdays, 2--3 pm
e-mail haber@scipp.ucsc.edu
alternate e-mail haber@ucsc.edu


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Most recent teaching

excerpted from a 1996 Foxtrot cartoon by Bill Amend

Local seminars and colloquia


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High Energy Physics Links


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The Higgs Boson Re-explained

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


RECENT NEWS

new!!! June 15, 2016: Today I gave the last of four lectures entitled Supersymmetric Theory and Models at the 2016 Theoretical Advanced Study Institute (TASI 2016) in Boulder, CO. Links to the PDF slides of the four lectures can be found in Section VII of this website.

May 12, 2016: My paper in collaboration with Patrick Draper and Josh Ruderman entitled Partially Natural Two Higgs Doublet Models was posted today on the arXiv. A link to this paper can be found in Section II of this website.

In this paper, we consider the implications of a discovery of new light fundamental scalars other than the Standard Model Higgs boson, under the assumption that the electroweak symmetry breaking scale is fine-tuned (perhaps as a result of selction effects). In this latter case, the common wisdom is that all additional elementary scalars must be heavy. We discuss counterexamples where the Higgs boson is light because of fine-tuning, and a second scalar doublet is light because a discrete symmetry relates its mass to the mass of the Standard Model Higgs boson. Our examples require new vectorlike fermions at the electroweak scale, and the models possess a rich electroweak vacuum structure.

April 18, 2016: My talk entitled Revisiting the 2012 Higgs Wishlist, given at the KITP Workshop on Experimental Challenges for the LHC Run II has been posted to Section VII of this website.

February 29, 2016: My paper in collaboration with Jérémy Bernon, John F. Gunion, Yun Jiang and Sabine Kraml entitled Scrutinizing the Alignment Limit in Two-Higgs-Doublet Models. II.: mH=125 GeV was published today in Physical Review D. In this paper, we examine the theoretical structure and the phenomenological implications of the alignment regime of the 2HDM (with and without decoupling) where the couplings of the heavier of the two CP-even Higgs scalars are nearly indistinguishable from those of the Standard Model (SM) Higgs boson. Implications for Run 2 at the LHC, including expectations for observing the non-SM-like scalar states, are considered. A link to this paper can be found in Section II of this website.

February 19, 2016: The Particle Data Group (PDG) announces that updated PDG review articles for the 2016 edition of the Review of Particle Physics are now available at http://pdg.lbl.gov/. In particular, check out my updated review of Supersymmetry, Part I (Theory).

February 17, 2016: My paper, in collaboration with Marcela Carena, Ian Low, Nausheen Shah and Carlos Wagner, entitled Alignment limit of the NMSSM Higgs sector was published today in Physical Review D. In this paper, we identify the Higgs alignment region of the NMSSM parameter space where the observed Higgs boson is predicted to have SM-like properties. The alignment limit in the NMSSM leads to a well defined spectrum in the Higgs and Higgsino sectors, and yields a rich and interesting Higgs boson phenomenology that can be tested at the LHC. A link to this paper can be found in Section II of this website.

January 11, 2016: My presentation to Physics 205 can be found in Section V of this website.

January 3, 2016: The 2016 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 31, 2015: My three year term as Secretary-Treasurer of the Division of Particles and Fields of the American Physical Society has now come to an end. Best of luck to my successor, Kate Scholberg!

December 6, 2015: The 1st RISE Collaboration Meeting: NonMinimalHiggs took place on December 6--8, 2015 as an adjunct to the Scalars 2015 Conference held at the University of Warsaw. I presented by vidyo link the Santa Cruz node of the RISE Collaboration     [PDF]

November 13, 2015: My paper in collaboration with Jérémy Bernon, John F. Gunion, Yun Jiang and Sabine Kraml entitled Scrutinizing the Alignment Limit in Two-Higgs-Doublet Models: Part 2: mH=125 GeV was posted today on the arXiv. A link to this paper can be found in Section II of this website.

In this paper, we consider CP-conserving Two-Higgs-Doublet Models (2HDMs) of Type I and Type II near the alignment limit in which the heavier of the two CP-even Higgs bosons, H, is the SM-like state of mass 125 GeV. We review the theoretical structure and analyze the phenomenological implications of this particular realization of the alignment limit, which contains at least one (and perhaps more than one) scalar Higgs state with a mass below 125 GeV. For the numerical analysis, all relevant pre-LHC constraints, constraints from the measurements of the 125 GeV Higgs signal at the LHC, as well as the most recent limits coming from searches for additional Higgs-like states are employed, and the implications for Run 2 at the LHC are elucidated.

November 2, 2015: My paper in collaboration with Marcela Carena, Ian Low, Nausheen Shah and Carlos Wagner On the Alignment Limit of the NMSSM Higgs Sector was posted today on the arXiv. A link to this paper can be found in Section II of this website.

In this paper, an attractive region of the NMSSM parameter space is identified in which the alignment limit is realized and the observed Higgs boson is predicted to have SM-like properties. Analytic expressions for the alignment conditions are derived and are shown to point toward a more natural region of parameter space for electroweak symmetry breaking. Moreover, the alignment limit in the NMSSM leads to a well defined spectrum in the Higgs and Higgsino sectors, and yields a rich and interesting Higgs boson phenomenology that can be tested at the LHC.

October 15, 2015: My paper in collaboration with Oscal Stål entitled New LHC Benchmarks for the CP-conserving Two-Higgs-Doublet Model was published today in European Physical Journal C. This paper presents a strategy to study the parameter space of the CP-conserving, two-Higgs-doublet Model (2HDM) with Type I or II Yukawa couplings. Benchmark points, lines and planes are established by specifying the observed Higgs boson mass and its coupling strength to vector boson pairs, the mass of the second CP-even Higgs boson, the ratio of neutral Higgs vevs, and three additional dimensionless parameters. Our benchmark scenarios capture different aspects of non-standard Higgs phenomenology that are of interest for future LHC Higgs searches. A link to this paper can be found in Section II of this website.

October 6, 2015: My paper in collaboration with Jérémy Bernon, John F. Gunion, Yun Jiang and Sabine Kraml entitled Scrutinizing the Alignment Limit in Two-Higgs-Doublet Models: mh=125 GeV was published today in Physical Review D. In this paper, we examine the theoretical structure and the phenomenological implications of the alignment regime of the 2HDM (with and without decoupling) where the couplings of the lighter of the two CP-even Higgs scalars are nearly indistinguishable from those of the Standard Model (SM) Higgs boson. Implications for Run 2 at the LHC, including expectations for observing the non-SM-like scalar states, are considered. A link to this paper can be found in Section II of this website.

August 24, 2015: My talk entitled Partially Natural Two Higgs Doublet Models, given at the 23rd International Conference on Supersymmetry and Unification of Fundamental Interactions (SUSY 2015) has been posted to Section VII of this website.

August 3, 2015: My paper, in collaboration with Pedro Ferreira and Edward Santos, entitled Preserving the validity of the Two-Higgs Doublet Model up to the Planck scale, was published today in Physical Review D. This paper examines the constraints on the two Higgs doublet model (2HDM) due to the stability of the scalar potential and absence of Landau poles at energy scales below the Planck scale. The parameter regimes of the 2HDM with a 125 GeV SM-like Higgs boson that are stable and perturbative up to the Planck scale yield significant constraints on the heavy scalar spectrum. A link to this paper can be found in Section II of this website.

July 16, 2015: My paper in collaboration with Oscal Stål entitled New LHC Benchmarks for the CP-conserving Two-Higgs-Doublet Model was posted today on the arXiv. A link to this paper can be found in Section II of this website.

In this paper, we introduce a strategy to study the parameter space of the general, CP-conserving, two-Higgs-doublet Model (2HDM) with a softly broken Z2-symmetry by means of a new hybrid basis of parameters consisting of the measured values of the mass of the observed Higgs boson and its coupling strength to vector boson pairs, the mass of the second CP-even Higgs boson, the ratio of neutral Higgs vevs, and three additional dimensionless parameters. We use these input parameters to perform numerical scans of the 2HDM parameter space, surveying the available parameter regions and analyzing the model constraints. Using these results, we define a number of benchmark scenarios that capture different aspects of non-standard Higgs phenomenology that are of interest for future LHC Higgs searches.

July 6, 2015: My paper in collaboration with Jérémy Bernon, John F. Gunion, Yun Jiang and Sabine Kraml entitled Scrutinizing the Alignment Limit in Two-Higgs-Doublet Models:Part 1: mh=125 GeV was posted today on the arXiv. A link to this paper can be found in Section II of this website.

In this paper, we focus on the alignment regime of the 2HDM parameter regime where the couplings of the lighter of the two CP-even Higgs scalars are nearly indistinguishable from those of the Standard Model (SM) Higgs boson. We review the theoretical structure and analyze the phenomenological implications of the alignment limit without decoupling, in which the masses of the non-SM-like Higgs scalars are not significantly larger than the SM-like Higgs boson. For the numerical analysis, we perform scans of the 2HDM parameter space, taking into account all relevant pre-LHC constraints, the latest constraints from the measurements of the 125 GeV Higgs signal at the LHC, as well as the most recent limits coming from searches for other Higgs-like states. Implications for Run 2 at the LHC, including expectations for observing the other scalar states, are considered.

July 1, 2015: An expanded version of the June 23 talk entitled, LHC Benchmarks for the CP-conserving Two-Higgs-Doublet Model was presented at an LIP seminar at the Laboratorio de Instrumentacao e Fisica Experimental de Particulas in Lisbon, Portugal. The slides from the seminar have been posted to Section VII of this website.

news archive    Listings of older news items are stored here.


I. Research

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

The properties of the 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 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. My recent work has advocated the importance of a basis-independent treatment of the 2HDM. Recently, I have focused on the relevance of the so-called decoupling and alignment limits of the 2HDM in which one of scalars closely resembles the SM Higgs boson. The basis-independent technology provides a very powerful and simple framework for studying and interpreting these limits.

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


II. Publications

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

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

Link to my most recent preprint:

Links to my 2016 publications:

Links to my 2015 publications:

Link to my most recent conference proceedings:

Twelve selected publications from the last twelve years are listed below.

  1. Probing wrong-sign Yukawa couplings at the LHC and a future linear collider
    P.M. Ferreira, John F. Gunion, Howard E. Haber, Rui Santos. Mar 19, 2014. 24 pp.
    SCIPP-14-02, UCD-2014-2
    Published in Phys.Rev. D89 (2014) 115003
    DOI: 10.1103/PhysRevD.89.115003
    Published version:   [PDF]
    e-Print: arXiv:1403.4736 [hep-ph] | PDF

  2. Decoupling of the Right-handed Neutrino Contribution to the Higgs Mass in Supersymmetric Models
    Patrick Draper, Howard E. Haber. Apr 22, 2013. 27 pp.
    SCIPP-13-04.
    Published in Eur.Phys.J. C73 (2013) 2522
    DOI: 10.1140/epjc/s10052-013-2522-7
    Published version:   [PDF]
    e-Print: arXiv:1304.6103 [hep-ph] | PDF

  3. Mass-degenerate Higgs bosons at 125 GeV in the Two-Higgs-Doublet Model.
    P.M. Ferreira, Howard E. Haber, Rui Santos, Joao P. Silva. Nov 2012. 17 pp.
    SCIPP-12-14.
    Published in Phys.Rev. D87 (2013) 055009
    DOI: 10.1103/PhysRevD.87.055009
    Published version:   [PDF]
    e-Print: arXiv:1211.3131 [hep-ph] | PDF


  4. Group-theoretic Condition for Spontaneous CP Violation.
    Howard E. Haber (UC, Santa Cruz), Ze'ev Surujon (UC, Irvine). Jan 2012. 25 pp.
    SCIPP-12-01, UCI-TR-2012-01.
    Published in Phys.Rev. D86 (2012) 075007
    DOI: 10.1103/PhysRevD.86.075007
    Published version:   [PDF]
    e-Print: arXiv:1201.1730 [hep-ph] PDF


  5. Basis-independent methods for the two-Higgs-doublet model III: The CP-conserving limit, custodial symmetry, and the oblique parameters S, T, U.
    Howard E. Haber, Deva O'Neil (UC, Santa Cruz). Nov 2010. 58 pp.
    SCIPP-10-18.
    Published in Phys.Rev. D83 (2011) 055017
    DOI: 10.1103/PhysRevD.83.055017
    Published version:   [PDF]
    e-Print: arXiv:1011.6188 [hep-ph]


  6. Supersymmetric Monojets at the Large Hadron Collider.
    Benjamin C. Allanach (Cambridge U., DAMTP), Sebastian Grab, Howard E. Haber (UC, Santa Cruz). Oct 2010. 42 pp.
    DAMTP-2010-83, SCIPP-10-16.
    Published in JHEP 1101 (2011) 138, Erratum-ibid. 1107 (2011) 087, Erratum-ibid. 1109 (2011) 027
    DOI: 10.1007/JHEP01(2011)138, 10.1007/JHEP07(2011)087, 10.1007/JHEP09(2011)027,
    Published version:   [PDF]   [Erratum 1]   [Erratum 2]
    e-Print: arXiv:1010.4261 [hep-ph]


  7. Geometric picture of generalized-CP and Higgs-family transformations in the two-Higgs-doublet 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.
    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]


  8. Hard supersymmetry-breaking 'wrong-Higgs' couplings of the MSSM.
    Howard E. Haber, John D. Mason (UC, Santa Cruz). Nov 2007. 32 pp.
    SCIPP-07-16.
    Published in Phys.Rev. D77 (2008) 115011
    DOI: 10.1103/PhysRevD.77.115011
    Published version:   [PDF]
    e-Print: arXiv:0711.2890 [hep-ph]


  9. Seesaw mechanism in the sneutrino sector and its consequences.
    Athanasios Dedes (Durham U., IPPP & Ioannina U.), Howard E. Haber (UC, Santa Cruz), Janusz Rosiek (Durham U., IPPP & Warsaw, CFT). Jul 2007. 63 pp.
    IPPP-07-16,CPT-07-32, SCIPP-07-10.
    Published in JHEP 0711 (2007) 059
    DOI: 10.1088/1126-6708/2007/11/059
    Published version:   [PDF]
    e-Print: arXiv:0707.3718 [hep-ph]


  10. Basis-independent methods for the two-Higgs-doublet model. II. The Significance of tan beta.
    Howard E. Haber, Deva O'Neil (UC, Santa Cruz). Feb 2006. 48 pp.
    SCIPP-06-01.
    Published in Phys.Rev. D74 (2006) 015018, Erratum-ibid. D74 (2006) 059905
    DOI: 10.1103/PhysRevD.74.015018, 10.1103/PhysRevD.74.059905
    Published version:   [PDF]   [Erratum]
    e-Print: hep-ph/0602242 | PDF


  11. Basis-independent methods for the two-Higgs-doublet model
    Sacha Davidson (Durham U., IPPP & Lyon, IPN), Howard E. Haber (Durham U., IPPP & UC, Santa Cruz). Apr 2005. 45 pp.
    IPPP-03-23, DCPT-03-46, SCIPP-04-15.
    Published in Phys.Rev. D72 (2005) 035004, Erratum-ibid. D72 (2005) 099902
    DOI: 10.1103/PhysRevD.72.035004, 10.1103/PhysRevD.72.099902
    Published version:   [PDF]   [Erratum]
    e-Print: hep-ph/0504050 | PDF



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


  1. Higgs Bosons in Supersymmetric Models. 1.
    J.F. Gunion (UC, Davis), Howard E. Haber (UC, Santa Cruz & SLAC). Aug 1984. 111 pp.
    Published in Nucl.Phys. B272 (1986) 1, Erratum-ibid. B402 (1993) 567-569
    SLAC-PUB-3404.
    DOI: 10.1016/0550-3213(86)90340-8; 10.1016/0550-3213(93)90653-7
    Published version:   [PDF]   [Erratum]


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

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 - Cited by 1 record

The Higgs boson explained in 60 seconds

Howard E. Haber, Symmetry Magazine, volume 3, issue 6 (August, 2006)    [HTML | PDF]

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III. Published Reviews

  1. Supersymmetry, Part I (Theory).
    Howard E. Haber (UC, Santa Cruz). Oct. 2013. 55 pp.
      PDF from the 2014 edition of the
    Review of Particle Physics (RPP)
    Particle Data Group Collaboration (K A Olive (Minnesota U.) et al.). 2014. 1675 pp.
    Published in Chin.Phys. C38 (2014) 090001
    DOI: 10.1088/1674-1137/38/9/090001
    Published version:   [PDF]




  2. Two-component 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.
    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]
    e-Print: arXiv:0812.1594 [hep-ph]
  3. 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 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.]

  4. 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


  5. 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 In *Stanford 1993, Spin structure in high energy processes* 231-272
    Presented at Conference: C93-07-26
    e-Print: hep-ph/9405376
    Postscript and PDF from this website.


  6. 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]

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IV. Published Books

Co-authored books

  1. The Higgs Hunter's Guide.
    John F. Gunion (UC, Davis), Howard E. Haber (UC, Santa Cruz), Gordon L. Kane (Michigan U.), Sally Dawson (Brookhaven). Jun 1989. 404 pp.
    SCIPP-89/13, UCD-89-4, BNL-41644.
    Published in Front. Phys. 80 (2000) 1-448

    Link to The Higgs Hunter's Guide webpage at the Perseus Books Group.

    You can also order an e-book version of the Higgs Hunter's Guide from ebooks.com. A limited preview is available.



Edited books

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


  2. Electroweak symmetry breaking and new physics at the TeV scale.
    T.L. Barklow, (ed.) (SLAC), S. Dawson, (ed.) (Brookhaven), H.E. Haber, (ed.) (UC, Santa Cruz), J.L. Siegrist, (ed.) (LBL, Berkeley). 1996.
    Published in Singapore, Singapore: World Scientific (1996) 736 p. (Advanced series on directions in high energy physics. 16)

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





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V. Teaching

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VI. Notes and other writings

  1. Toward a set of 2HDM benchmarks     [PDF | PS]
  2. The eigenvalues of the quadratic Casimir operator and second-order indices of a simple Lie algebra     [PDF | PS]
  3. Notes on basis changes and matrix diagonalization     [PDF | PS]
  4. Notes on the complex inverse trigonometric and hyperbolic functions and their principal values     [PDF | PS]
  5. Proof of a trace inequality in matrix algebra     [PDF | PS]
  6. Notes on the spontaneous breaking of SU(N) and SO(N) via a second-rank tensor multiplet     [PDF | PS]
  7. Notes on antisymmetric matrices and the pfaffian     [PDF | PS]
  8. Complex representation of scalar fields and the embedding of U(n) in SO(2n)     [PDF | PS]
  9. The probability that a product of random numbers is less than a fixed constant     [PDF | PS]
  10. Massless Majorana and Weyl fermions cannot be distinguished     [PDF | PS]

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VII. Talks at conferences, workshops and schools, 2004--2016

2016 Conferences and workshops

  1. 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]

2015 Conferences and workshops

  1. The 23rd International Conference on Supersymmetry and Unification of Fundamental Interactions (SUSY 2015), at Granlibakken Conference Center & Lodge, Tahoe City, CA, August 24, 2015     Partially Natural Two Higgs Doublet Models   [PDF]
  2. 2HDM Benchmark Discussion, CERN, June 23, 2015     LHC Benchmarks for the CP-conserving 2HDM   [PDF]

    An expanded version of this talk was given on July 1, 2015 at an LIP Seminar at Laboratorio de Instrumentacao e Fisica Experimental de Particulas in Lisbon, Portugal     [PDF]
  3. Third KUTS Workshop at LPTHE in Paris, France, May 20, 2015     The Alignment Limit of the MSSM Higgs sector--the Impact of Radiative Corrections   [PDF]
  4. The 4th MCTP Spring Symposium on Higgs Boson Physics in the Standard Model and Beyond at the University of Michigan, Ann Arbor, MI, April 20, 2015     Partially Natural Two Higgs Doublet Models   [PDF]
  5. The 2nd Toyama International Workshop on "Higgs as a Probe of New Physics 2015" (HPNP2015), Toyama, Japan, February 14, 2015     Constraints on the alignment limit of the MSSM Higgs sector   [PDF]
  6. SiD Workshop, January 2015 at SLAC, January 12, 2015     Higgs Physics and the ILC   [PDF]

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

Schools and Pedagogical Lectures

  1. 2016 Theoretical Advanced Study Institute (TASI 2016), 6 June--1 July 2016,     Supersymmetric Theories and Models [Lecture 1 | Lecture 2 | Lecture 3 | Lecture 4]

  2. 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]

  3. Idpasc Higgs School, Foz do Arelho, Portugal, 6--9 Sept 2011,     Theory of Higgs Bosons: The Standard Model and Beyond   [PDF]

  4. 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]

  5. 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]

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

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

  8. 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]

  9. 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. 2016 Conferences and workshops in particle physics

6th International Workshop on High Energy Physics in the LHC Era [HEP2016], January 6--12, 2016, in Valparaiso, Chile

Aspen Center for Physics Winter Conference on Particle Physics: Particle Physics on the Verge of Another Discovery?, January 10--16, 2016, in Aspen, CO

The 11th Workshop of LHC Higgs Cross Section Working Group, January 13--15, 2016 at CERN in Geneva, Switzerland

CLIC Workshop 2016, January 18--22, 2016 at CERN, Geneva, Switzerland

Fourth KUTS Workshop, January 20--22, 2016 in Heidelberg, Germany

Martin Perl Symposium, February 12, 2016 at SLAC, Stanford, CA USA

UCLA Dark Matter 2016 Symposium, February 17--19, 2016 at UCLA in Los Angeles, CA USA

XXVIII Workshop Beyond the Standard Model, February 22--25, 2016 at the Physikzentrum in Bad Honnef, Germany

Conference on New Physics at the Large Hadron Collider, February 29--March 4, 2016, at the Nanyang Executive Centre, NTU, Singapore

30th Rencontres de Physique de la Vallée d'Aoste on Results and Perspectives in Particle Physics, March 6--12, 2016, at La Thuile, Aosta Valley, Italy

Bay Area Particle Theory Seminar (BAPTS), March 11, 2016 at San Francisco State University (SFSU) in San Francisco, CA

Electroweak Interactions and Unified Theories, March 12--19, 2016, at La Thuile, Aosta Valley, Italy

MHV @ 30: Amplitudes and Modern Applications, March 16--19, 2016 at Fermilab, Batavia, IL USA

LHC Run II and the Precision Frontier, March 21--June 24, 2016 at the KITP, Santa Barbara, CA USA

Experimental Challenges for the LHC Run II, March 28--June 3, 2016 at the KITP, Santa Barbara, CA USA

LHCSki 2016, A first discussion of 13 TeV results, April 10--15, 2016, at the Oberrgurgl University Center in Tyrol, Austria

American Physical Society April Meeting, April 16--19, 2015 in Salt Lake City, Utah

The 16th International Conference on B-Physics at Frontier Machines [Beauty 2016] May 2--6, 2016 in Marseille, France

Standard Model at LHC 2016 (SM@LHC), May 3--6, 2016 in Pittsburgh, PA

Phenomenology 2016 Symposium (PHENO 2016), May 9--11, 2016 in Pittsburgh, PA

Higgs Tasting Workshop 2016, May 15--21, 2016 in Benasque, Spain

Stress-testing the Standard Model at the LHC, May 23--27, 2016 at the KITP, Santa Barbara, CA USA

PLANCK 2016, May 23--27, 2016 in Valencia, Spain

The Many Faces of Naturalness, May 29--June 19, 2016 at the Aspen Center for Physics in Aspen, CO

European Linear Collider Workshop (ECFALC2016), May 30--June 5, 2016, in Santander, Spain

Large Hadron Collider Physics (LHCP2016) Conference, June 13--18, 2016 in Lund, Sweden

Fifth KUTS Workshop, June 15--17, 2016 in Madrid, Spain

15th Conference in the String Phenomenology Conference series (STRING PHENO 2016), June 20--24, 2016 at the University of Ioannina in Ioannina, Greece.

Pre-SUSY Symposium 2016 June 27--July 1, 2016 in Melbourne, Australia

The 24th International Conference on Supersymmetry and Unification of Fundamental Interactions (SUSY 2016), July 4--8, 2016

Santa Fe 2016 Summer Workshop on LHC Run 2, July 4--8, 2016 in Santa Fe, NM USA

XXVII International Conference on Neutrino Physics and Astrophysics [Neutrino 2016], July 4--9, 2016, in London, UK

5th International Conference on New Frontiers in Physics (ICNFP 2016), July 6--14, 2016 at the Orthodox Academy of Crete, in Kolymbari, Greece.

The 12th Workshop of LHC Higgs Cross Section Working Group, July 7--8, 2016 at CERN in Geneva, Switzerland

PASCOS-2016: 22nd International Symposium on Particles, Strings and Cosmology, July 10--16, 2016 in Quy Nhon, Vietnam

2016 Kavli Institute for Theoretical Physics China (KITPC) workshop on "New Physics at the LHC Run II", July 11--August 5, 2016 at the KITPC in Beijing, China

Particles and Strings 2016, July 18--22, 2016 in Havana, Cuba

Charting the Unknown: interpreting LHC data from the energy frontier, July 25--August 12, 2016, at CERN, Geneva, Switzerland

38th International Conference on High Energy Physics, August 3--10, 2016 in Chicago, IL USA     [Program]

Zuoz Summer School 2016: Exothiggs, August 14--20, 2016 at the Lyceum Alpinum in Zuoz, Switzerland

The LHC Awakens: A New Energy Frontier, August 14--September 18, 2016 at the Aspen Center for Physics in Aspen, CO

LoopFest XV, August 15--17, 2016 at the University of Buffalo in Amherst, NY USA

SLAC Summer Institute, "New Horizons on the Energy Frontier", August 15--26, 2016 at SLAC, in Stanford, CA

Higgs Hunting 2016, August 31--September 2, 2016 at LPNHE in Paris, France

The 6th Workshop on High Precision for Hard Processes (HP2), September 5--9, 2016 in Buenos Aires, Argentina

A First Glance Beyond the Energy Frontier, September 5--9, 2016 at the ICTP in Trieste, Italy

Workshop on Multi-Higgs Models, September 6--9, 2016 in Lisbon, Portugal

Invisibles16 Workshop, September 12--16, 2016 in Orto Botanico, Padova, Italy

Higgs Days at Santander 2016, September 19--23, 2016 in Santander, Spain

Sixth International Workshop on the Prospects for Charged Higgs Discovery at Colliders (CHARGED 2016), October 3--6, 2016, in Uppsala, Sweden

Higgs Effective Field Theories workshop (HEFT2016), October 26--28, 2016 at the Niels Bohr Institute at the University in Copenhagen, Denmark

Higgs Couplings 2016, November 9--12, 2016 at SLAC, Stanford, CA

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

conference and workshop archive    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

AddALL book search

CERN links

CERN homepage

CERN users

CERN Theory group

CERN Document Server

CERN Yellow Reports

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 TWiki Portal

ATLAS Documents

ATLAS Experiment--Public results

ATLAS Higgs Physics results

ATLAS Supersymmetry Physics results

CMS Documents

CMS Physics results

CMS Higgs Physics results

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

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

arXiv preprint server

INSPIRE HEP

CERN Document Server

Interactions.org

Particle Data Group

High Energy Physics Software and Collider Tools

International Linear Collider

American Linear Collider Working Group

International Linear Collider (ILC) homepage

ILC Technical Design Report

Journals

European Physics Journal C

JHEP

Journal of Mathematical Physics

Nuclear Physics B

Physical Review Online Archive (PROLA)

Physics Letters B

Physics Reports

Mathematica and Maple links

List of Mathematica Commands

Maple cheatsheet

Mathematics links

Mathematical Association of America

Table of integrals

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 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

Of Particular Significance

Quantum Diaries

A Quantum Diaries Survivor

Resonaances

viXra log

Physics links

Division of Particles and fields of the APS

American Physical Society

Professional publishers

EPJC Manuscript Central

ScienceDirect

SpringerLink

Search links

Google Books

Google Scholar

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   [PDF]

Using Imported Graphics in LaTeX and pdfLaTeX


XII. Miscellaneous links of interest

Humor

Piled Higher and Deeper (Ph.D. Comics)

Sports

ESPN

National Football League

National Hockey League

San Francisco Giants

San Francisco 49ers

San Jose Sharks

Major League Baseball

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 from the last eleven years can be found here.

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haber@scipp.ucsc.edu
Last Updated: June 19, 2016