The Properties Of Higgs Bosons In Constrained MSSM

In the area of particle physics, there is no doubt about the pervasive achievements ofStandard Model(SM) whose predictions have been exactly confirmed. Until now, nearly allof the particles in SM have been found except Higgs which is responsible for the electroweaksymmetry breaking.On Dec.13th.2011, LHC reported their results of searching for Higgs. Apart from excludingcertain ranges of Higgs mass in SM, they also found the probable evidences of Higgs, whose massis near125GeV. With such a mass, the di-photon Higgs signal is about twice of SM prediction.This is a very important progress which implies the correctness of Higgs mechanism as well asthe existence of new physics beyond standard model.For the remarkable advantages, supersymmetry(SUSY) has been considered as the primecandidate of new physics. In this work, we will check that if the constrained SUSY model isable to explain the latest result of LHC. We study the properties of Higgs bosons in two kinds ofconstrained MSSM (CMSSM and NUHM2) by considering various experimental and theoreticalconstraints including the relic density measured by WMAP, constraints from XENON100, allrelevant limits from LEP, Tevatron and LHC as well as the muon anomalous magnetic moment.We scan the parameter space of CMSSM and NUHM2using NMSSMTools, then calculatethe decays of flavor physics using SuperIso and the Higgs mass, cross section, branching ratiousing FeynHiggs. Under these constraints, The lightest Higgs boson (0) in the CMSSM and NUHM2is upper bounded by124GeV.It is hard to give a SM-like Higgs with a mass in accordance with the results of LHC.In these models, the di-photon Higgs signal at LHC is suppressed relative to the SMprediction, which are opposite from LHC.The lower bound of top-squark mass goes up with, reaching600GeV while=124GeV.The non SM-like Higgs bosons is not likely to be found in the current luminosity at LHC.