Impact of Higgs physics on the parameter space of the $\mu \nu$SSM

ESSODJOLO KPATCHA, DANIEL E. LOPEZ - FOGLIANI, CARLOS MUÑOZ, ROBERTO RUIZ DE AUSTRI

The European Physical Journal C

Springer/SIF

Año: 2020 vol. 2020 p. 1 - 69

Given the increasing number of experimental data, together with theprecise measurement of the properties of the Higgs boson at the LHC,the parameter space of supersymmetric models starts to beconstrained. We carry out a detailed analysis of this issue in theframework of the μνSSM. Inthis model, three families of right-handed neutrino superfields arepresent in order to solve the μproblem and simultaneously reproduce neutrino physics. The newcouplings and sneutrino vacuum expectation values in the μνSSMinduce new mixing of states, and, in particular, the three rightsneutrinos can be substantially mixed with the neutral Higgses. Afterdiagonalization, the masses of the corresponding three singlet-likeeigenstates can be smaller or larger than the mass of the Higgs, oreven degenerated with it. We analyze whether these situations arestill compatible with the experimental results. To address it we scanthe parameter space of the Higgs sector of the model. In particular,we sample the μνSSM using apowerful likelihood data-driven method, paying special attention tosatisfy the constraints coming from Higgs sector measurements/limits(using HiggsBounds and HiggsSignals), as well as a class of flavorobservables such as B and μdecays, while muon g−2is briefly discussed. We find that large regions of the parameterspace of the μνSSM areviable, containing an interesting phenomenology that could be probedat the LHC. p { margin-bottom: 0.1in; line-height: 120%; }a:link { }