Howard Baer, Vernon Barger, Azar Mustafayev
The ATLAS and CMS collaborations have reported an excess of events in the
\gamma\gamma, ZZ^*\to 4\ell and WW^* search channels at an invariant mass m
\simeq 125 GeV, which could be the first evidence for the long-awaited Higgs
boson. We investigate the consequences of requiring m_h\simeq 125 GeV in both
the mSUGRA and NUHM2 SUSY models. In mSUGRA, large values of trilinear soft
breaking parameter |A_0|>1.8 m_0 are required, and universal scalar m_0> 0.8
TeV is favored so that we expect squark and slepton masses typically in the
multi-TeV range. This typically gives rise to an "effective SUSY" type of
sparticle mass spectrum. In this case, we expect gluino pair production as the
dominant sparticle creation reaction at LHC. The superpotential parameter \mu>
2 TeV and m_A> 0.8 TeV, greatly restricting neutralino annihilation mechanisms.
These latter conclusions are softened in the NUHM2 model. The standard
neutralino abundance tends to be far above WMAP-measured values unless the
neutralino is higgsino-like. We remark upon possible non-standard (but perhaps
more attractive) cosmological scenarios which can bring the predicted dark
matter abundance into accord with the measured value, and discuss the
implications for direct and indirect detection of neutralino cold dark matter.
View original:
http://arxiv.org/abs/1112.3017
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