Higgs boson discovery versus sparticles prediction: Impact on the pMSSM's posterior samples from a Bayesian global fit

Abstract

The signal strength of the recently discovered Higgs boson-like particle in the diphoton channel seemingly constrains physics beyond the standard model to a severe degree. However, the reported signal strength is prone to possible underestimation of uncertainties. We propose a discriminant that is relatively free of many of the theoretical uncertainties, and use this to gauge the impact on the phenomenological MSSM. A Bayesian global fit to all the pre-LHC data results in posterior distributions for the masses that are neither very restrictive, nor sufficiently prior-independent (except for the Higgs and stop masses). The imposition of the Higgs data, on the other hand, yields interesting and nearly prior-independent constraints. In particular, the existence of some light superpartners is favoured.

v2: added references and minor changes, published version

References in corpus (10)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• The PDF4LHC Working Group Interim Recommendations
• Impact of a Higgs boson at a mass of 126 GeV on the standard model with three and four fermion generations
• The apparent excess in the Higgs to di-photon rate at the LHC: New Physics or QCD uncertainties?
• Discovery reach for generic supersymmetry at the LHC: MT2 versus missing transverse momentum selections for pMSSM searches
• LHC-7 supersymmetry search interpretation within the pMSSM
• A Full 24-Parameter MSSM Exploration
• Cold Dark Matter Hypotheses in the MSSM
• Searches for the Higgs boson at the Tevatron

Cited by in corpus (8)

• Summary of the ATLAS experiment's sensitivity to supersymmetry after LHC Run 1 - interpreted in the phenomenological MSSM
• More Energy, More Searches, but the pMSSM Lives On
• Dark matter and collider signatures of the MSSM
• Slim SUSY
• Where to look for natural supersymmetry
• MFV Reductions of MSSM Parameter Space
• Light stop in the MSSM after LHC Run 1
• SUSY effects in Higgs productions at high energy $e^{+}{e}^{-}$ colliders