  The LHC discovered the Standard Model (SM) like Higgs boson with mass around
125 GeV. However, there exist hints of deviations from Higgs decays. Including
the Tevatron data, the deviations can be explained by the extremely mixed stop
sector in the sense of best global fit (BGF). We analyze the relations among
the competing reduced coupling hGG, Higgs boson mass,and LHC stop mass m_{\wt
t_1} lower bound at the tree- and one-loop level. In particular, we point out
that we use the light stop running mass in the Higgs boson mass calculation
while the light stop pole mass in the Higgs decays. So the gluino radiative
correction on the light stop mass plays the crucial role. Its large negative
correction saves the GBF in the Minimal Supersymmetric SM (MSSM) and the next
to the MSSM (NMSSM) constrained by the perturbativity. Moreover, a light stop
is predicted: in the MSSM if we set the gluino mass M_3\lesssim4 TeV, we have
m_{\wt t_1}<m_t; while in the NMSSM, imposing the least tuning condition we get
m_{\wt t_1}\simeq130 GeV for M_3\simeq1.5 TeV.

High Energy Physics - Phenomenology;High Energy Physics - Experiment