Howie Baer

Homer L. Dodge Professor of High Energy Physics



George Lynn Cross Research Professorship

Fellow of the American Physical Society



B.S. 1979 The University of Wisconsin

Ph.D. 1984 The University of Wisconsin



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Ph: (405) 325-7048

Office: 315 Nielsen Hall


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Research Description

My research interests lie at the interface of theoretical and experimental High Energy Physics, basically matching the predictions of theory against experimental data. I am especially interested in physics beyond the Standard Model, as given by theories with weak scale supersymmetry (SUSY). These theories predict a symmetry between bosons and fermions, and so each particle of the Standard Model is expected to have a superpartner particle differing in spin, and with mass of order the TeV scale.

My collaborators and I have developed the first computer code to reliably predict what supersymmetric matter states would look like in colliding beam machines such as the LHC. The LHC should have enough energy to either discover SUSY or rule out many of its manifestations.

I also work on the cosmology/particle physics interface, and have developed code to estimate the relic abundance of dark matter from the Big Bang in SUSY theories. We have also calculated rates for direct and indirect detection of WIMP (weakly interacting massive particles) dark matter. Recently, we are most interested in the consequences of mixed axion/neutralino cold dark matter.

Lately, I am especially interested in theories of "natural supersymmetry" with mixed axion-higgsino cold dark matter, and how this could be revealed at LHC or at an International Linear e+e- Collider (ILC).

Selected Publications

"Supergravity gauge theories strike back: There is no crisis for SUSY but a new collider may be required for discovery," Howard Baer, Vernon Barger and Michael Savoy, Physica Scripta, in press, (2015) arXiv: arXiv:1502.04127

"Supersymmetry with radiatively-driven naturalness: implications for WIMP and axion searches," Kyu Jung Bae, Howard Baer, Vernon Barger, Michael Savoy and Hasan Serce, Symmetry, (2015) arXiv: arXiv:1503.04137

"A natural Little Hierarchy for SUSY from radiative breaking of PQ symmetry," Kyu Jung Bae, Howard Baer and Hasan Serce, Phys. Rev. D91 (2015) 01500, (2015)

"SUSY models under siege: LHC constraints and electroweak fine-tuning," H. Baer, V. Barger, D. Mickelson and M. Padeffke-Kirkland, Phys. Rev. D89 (2014) 115019, (2014)

"Physics at a Higgsino Factory," Howard Baer, Vernon Barger, Dan Mickelson, Azar Mustafayev and Xerxes Tata, JHEP1406 (2014) 172, (2014)

"Radiatively-driven natural supersymmetry at the LHC," V. Barger, P. Huang, D. Mickelson, A. Mustafayev, W. Sreethawong and X. Tata, JHEP1312 (2013) 013., (2013)

"Radiative natural SUSY with a 125 GeV Higgs boson," Howard Baer, Vernon Barger, Peisi Huang, Azar Mustafayev and Xerxes Tata, Phys. Rev. Lett., 109, 161802, (2012) ADS: 2012PhRvL.109p1802B

Books Published

Weak Scale Supersymmetry: From Superfields to Scattering Events, Howard Baer and Xerxes Tata (Cambridge University Press, 2006)

See more publications.

Research Group

Hasan Serce, Post Doc