Implications of a high mass light MSSM Higgs scalar for supersymmetry searches at the LHC

Authors

Howard Baer, University of OklahomaFollow
Vernon Barger, University of WisconsinFollow
Peisi Huang, University of WisconsinFollow
Azar Mustafayev, University of MinnesotaFollow

Date of this Version

2011

Citation

PHYSICAL REVIEW D 84, 091701(R) (2011)

Comments

Copyright 2011 American Physical Society

DOI: 10.1103/PhysRevD.84.091701

Abstract

The Atlas and CMS groups have both reported an excess of events in the WW* [?] search channel, which could be the first evidence for the Higgs boson. In the MSSM, the lightest SUSY Higgs scalar h is expected to occur with mass m_h [?] 135 GeV, depending on the range of SUSY parameters scanned over. Since the h [?] WW* branching fraction falls swiftly with decreasing m_h, a signal in the WW* channel would favor an h at the high end of its predicted mass range. We scan over general GUT scale SUSY model parameters to find those which give rise to m_h [?] 130 GeV. A value of m₀ ~ 10-20 TeV is favored, with A₀ ~ ±2m₀, while the lower range of m_1/2 [?] 1 TeV is also slightly favored. This gives rise to an "effective SUSY" type of sparticle mass spectrum. For low m_1/2, gluino pairs may be accessible to LHC searches, while for higher m_1/2 values, the SUSY spectra would likely be out of range of LHC reach.