Implications of the Higgs Boson Discovery for mSUGRA

A Bayesian analysis is carried out to identify the consistent regions of the mSUGRA parameter space, where the newly-discovered Higgs bosonʼs mass is used as a constraint, along with other experimental constraints. It is found that m1/2 can lie in the sub-TeV region, A0/m0 is mostly confined to a narrow strip with |A0/m0|⩽1 , while m0 is typically a TeV or larger. Further, the Bayesian analysis is used to set 95% CL lower bounds on sparticle masses. Additionally, it is shown that the spin independent neutralino–proton cross section lies just beyond the reach of the current sensitivity but within the projected sensitivity of the SuperCDMS-1T and XENON-1T experiments, which explains why dark matter has thus far not been detected. The light sparticle spectrum relevant for the discovery of supersymmetry at the LHC are seen to be the gluino, the chargino and the stop with the gluino and the chargino as the most likely candidates.

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Corrections included to reflect journal version

Higgs
LHC
Supersymmetry
supergravity: minimal: parameter space
sparticle: mass spectrum
Higgs particle: mass
Bayesian
CERN LHC Coll
supersymmetry
dark matter

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