The post-Higgs MSSM scenario: habemus MSSM?
Laboratoire de Physique Théorique, Université Paris–Sud and CNRS, 91405, Orsay, France
2 Department of Physics and INFN, “Sapienza” Universtà di Roma, Pizzale Aldo Moro 5, 00185, Roma, Italy
3 Theory Unit, CERN, 1211, Genève 23, Switzerland
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Revised: 4 November 2013
Published online: 27 November 2013
We analyze the Minimal Supersymmetric extension of the Standard Model that we have after the discovery of the Higgs boson at the LHC, the hMSSM (habemus MSSM?), i.e. a model in which the lighter h boson has a mass of approximately 125 GeV which, together with the non-observation of superparticles at the LHC, indicates that the SUSY-breaking scale M S is rather high, M S ≳1 TeV. We first demonstrate that the value M h ≈125 GeV fixes the dominant radiative corrections that enter the MSSM Higgs boson masses, leading to a Higgs sector that can be described, to a good approximation, by only two free parameters. In a second step, we consider the direct supersymmetric radiative corrections and show that, to a good approximation, the phenomenology of the lighter Higgs state can be described by its mass and three couplings: those to massive gauge bosons and to top and bottom quarks. We perform a fit of these couplings using the latest LHC data on the production and decay rates of the light h boson and combine it with the limits from the negative search of the heavier H,A and H ± states, taking into account the current uncertainties.
© Springer-Verlag Berlin Heidelberg and Società Italiana di Fisica, 2013