Flavor-tuned 125 GeV supersymmetric Higgs boson at the LHC: Test of minimal and natural supersymmetric models
journal contributionposted on 12.12.2013, 00:00 by Vernon Barger, Peisi Huang, Muneyuki Ishida, Wai-Yee Keung
We show that an enhanced two-photon signal of the Higgs boson, h, observed with 125 GeV mass by the ATLAS and CMS collaborations, can be obtained if it is identified principally with the neutral H-u(0) of the two Higgs doublets of minimal supersymmetry. We focus on sparticles and the pseudoscalar Higgs A with TeV masses. The off-diagonal element of the (H-u(0), H-d(0)) mass matrix in the flavor basis must be suppressed, and this requires a large Higgsino mass parameter, mu similar to TeV, and large tan beta. A minimal supersymmetric Standard Model sum rule is derived that relates gamma gamma and b (b) over bar rates, and a gamma gamma enhancement relative to the SM predicts b (b) over bar reduction. On the contrary, natural supersymmetry requires vertical bar mu vertical bar < similar to 0.5 TeV, for which gamma gamma is reduced and b<(b)over bar> is enhanced. This conclusion is independent of the m(A) value and the supersymmetry quantum correction Delta(b). Relative tau(tau) over bar to b (b) over bar rates are sensitive to Delta(b).