Eur. Phys. J. C (2013) 73: 2650
https://doi.org/10.1140/epjc/s10052-013-2650-0

Letter

The post-Higgs MSSM scenario: habemus MSSM?

¹ 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

^* e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Received: 24 July 2013
Revised: 4 November 2013
Published online: 27 November 2013

Abstract

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.