@article{BechtleCamargoMolinaDeschetal.2016,
  author    = {Bechtle, Philip and Camargo-Molina, Jos{\´e} Eliel and Desch, Klaus and Dreiner, Herbert K. and Hamer, Matthias and Kr{\"a}mer, Michael and O'Leary, Ben and Porod, Werner and Sarrazin, Bj{\"o}rn and Stefaniak, Tim and Uhlenbrock, Mathias and Wienemann, Peter},
  title     = {Killing the cMSSM softly},
  series = {The European Physical Journal C},
  volume    = {76},
  journal   = {The European Physical Journal C},
  number    = {96},
  doi       = {10.1140/epjc/s10052-015-3864-0},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-165045},
  year      = {2016},
  abstract  = {We investigate the constrained Minimal Supersymmetric Standard Model (cMSSM) in the light of constraining experimental and observational data from precision measurements, astrophysics, direct supersymmetry searches at the LHC and measurements of the properties of the Higgs boson, by means of a global fit using the program Fittino. As in previous studies, we find rather poor agreement of the best fit point with the global data. We also investigate the stability of the electro-weak vacuum in the preferred region of parameter space around the best fit point. We find that the vacuum is metastable, with a lifetime significantly longer than the age of the Universe. For the first time in a global fit of supersymmetry, we employ a consistent methodology to evaluate the goodness-of-fit of the cMSSM in a frequentist approach by deriving p values from large sets of toy experiments. We analyse analytically and quantitatively the impact of the choice of the observable set on the p value, and in particular its dilution when confronting the model with a large number of barely constraining measurements. Finally, for the preferred sets of observables, we obtain p values for the cMSSM below 10 \%, i.e. we exclude the cMSSM as a model at the 90 \% confidence level.},
  language  = {en}
}
@article{DreinerKraussO'Learyetal.2016,
  author    = {Dreiner, Herbi K. and Krauss, Manuel E. and O'Leary, Ben and Opferkuch, Toby and Staub, Florian},
  title     = {Validity of the CMSSM interpretation of the diphoton excess},
  series = {Physical Review D},
  volume    = {94},
  journal   = {Physical Review D},
  number    = {5},
  doi       = {10.1103/PhysRevD.94.055013},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-187429},
  pages     = {055013},
  year      = {2016},
  abstract  = {It has been proposed that the observed diphoton excess at 750 GeV could be explained within the constrained minimal supersymmetric standard model via resonantly produced stop bound states. We reanalyze this scenario critically and extend previous work to include the constraints from the stability of the electroweak vacuum and from the decays of the stoponium into a pair of Higgs bosons. It is shown that the interesting regions of parameter space with a light stop and Higgs of the desired mass are ruled out by these constraints. This conclusion is not affected by the presence of the bound states because the binding energy is usually very small in the regions of parameter space which can explain the Higgs mass. Thus, this also leads to strong constraints on the diphoton production cross section which is in general too small.},
  language  = {en}
}