Implications of a 125 GeV Higgs scalar for the LHC supersymmetry and neutralino dark matter searches

摘要: The ATLAS and CMS collaborations have reported an excess of events in the $\ensuremath{\gamma}\ensuremath{\gamma}$, $Z{Z}^{*}\ensuremath{\rightarrow}4\ensuremath{\ell}$ $W{W}^{*}$ search channels at invariant mass $m\ensuremath{\simeq}125\text{ }\text{ }\mathrm{GeV}$, which could be first evidence for long-awaited Higgs boson. We investigate consequences requiring ${m}_{h}\ensuremath{\simeq}125\text{ }\mathrm{GeV}$ both minimal supergravity 2-parameter nonuniversal supersymmetric models. In supergravity, large values trilinear soft breaking parameter $|{A}_{0}|$ are required, universal scalar ${m}_{0}\ensuremath{\gtrsim}0.8\text{ }\mathrm{TeV}$ is favored so that we expect squark slepton masses typically multi-TeV range. This gives rise to ``effective supersymmetric'' type sparticle spectrum. this case, gluino pair production as dominant creation reaction LHC. For ${m}_{0}\ensuremath{\lesssim}5\text{ }\mathrm{TeV}$, superpotential $\ensuremath{\mu}\ensuremath{\gtrsim}2\text{ ${m}_{A}\ensuremath{\gtrsim}0.8\text{ greatly restricting neutralino annihilation mechanisms. These latter conclusions softened if ${m}_{0}\ensuremath{\sim}10--20\text{ or one proceeds model. standard abundance tends far above WMAP-measured unless Higgsino-like. remark upon possible nonstandard (but perhaps more attractive) cosmological scenarios can bring predicted dark matter into accord with measured value, discuss implications direct indirect detection cold matter.