Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2011-12-13
Physics
High Energy Physics
High Energy Physics - Phenomenology
23 pages including 22 .eps figures
Scientific paper
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| are required, and universal scalar m_0\agt 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. For m_0< 5 TeV, the superpotential parameter \mu > 2 TeV and m_A> 0.8 TeV, greatly restricting neutralino annihilation mechanisms. These latter conclusions are softened if m_0\sim 10-20 TeV or if one proceeds to 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.
Baer Howard
Barger Vernon
Mustafayev Azar
No associations
LandOfFree
Implications of a 125 GeV Higgs scalar for LHC SUSY and neutralino dark matter searches does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Implications of a 125 GeV Higgs scalar for LHC SUSY and neutralino dark matter searches, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Implications of a 125 GeV Higgs scalar for LHC SUSY and neutralino dark matter searches will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-223752