Killing the CMSSM softly

27 Aug 2015, 14:00
Cedar House ()

Cedar House

Precision Computations and Monte Carlo Tools, all areas Precision SUSY/Higgs/MCTools


Matthias Hamer (CBPF - Brazilian Center for Physics Research (BR))


The analysis of the data collected by the major LHC experiments during the LHC Run I has put strong constraints on supersymmetric models. We study the parameter space of the constrained Minimal Supersymmetric Standard Model (CMSSM) in a global fit, taking into account the non-observation of supersymmetry at the LHC, Higgs mass and rate measurements, as well as several cosmological and low energy observables. Before the start of the LHC, global fits of the CMSSM showed a favourable goodness-of-fit and indicated a strong preference for the existence of light SUSY particles. This region now has largely been excluded by the LHC. We present the final results of our study of the status of the CMSSM after the LHC Run1, where for the first time we use toy experiments to determine the p-Value of the model. A special emphasis is given on the dependence of the p-value on the choice of the observable set in the fit, where especially the Higgs rate measurements play a crucial role, since they had the potential for sensitivity to the CMSSM, had the Higgs boson been lighter. We find that the CMSSM is softly getting near its exclusion at the 95% CL.

Primary authors

Ben O'Leary (RWTH-Aachen) Bjorn Sarrazin (Universitaet Bonn (DE)) Herbi Dreiner (Bonn University) Jose Camargo-Molina (Institut fur Theoretische Physik und Astrophysik, University of Wurzburg) Klaus Desch (Universitaet Bonn (DE)) Mathias Uhlenbrock (Universitaet Bonn (DE)) Matthias Hamer (CBPF - Brazilian Center for Physics Research (BR)) Michael Kramer (Rheinisch-Westfaelische Tech. Hoch. (DE)) Peter Wienemann (University of Bonn) Philip Bechtle (Universitaet Bonn (DE)) Tim Stefaniak (SCIPP, UCSC) Werner Rudolf Porod (Julius Maximilians Universitaet Wuerzburg (DE))

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