Antonia Strübig

Publications (2)0 Total impact

• Source

  Available from: ArXiv

  Article: Constraints on the pMSSM from searches for squarks and gluinos by ATLAS

  Antonia Strübig, Sascha Caron, Michael Rammensee
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  ABSTRACT: We study the impact of the jets and missing transverse momentum SUSY analyses of the ATLAS experiment on the phenomenological MSSM (pMSSM). We investigate sets of SUSY models with a flat and logarithmic prior in the SUSY mass scale and a mass range up to 1 and 3 TeV, respectively. These models were found previously in the study 'Supersymmetry without Prejudice'. Removing models with long-lived SUSY particles, we show that 99% of 20000 randomly generated pMSSM model points with a flat prior and 87% for a logarithmic prior are excluded by the ATLAS results. For models with squarks and gluinos below 600 GeV all models of the pMSSM grid are excluded. We identify SUSY spectra where the current ATLAS search strategy is less sensitive and propose extensions to the inclusive jets search channel.
  02/2012;
• Source

  Available from: ArXiv

  Article: Higgs and non-universal gaugino masses: no SUSY signal expected yet?

  Sascha Caron, Jari Laamanen, Irene Niessen, Antonia Strübig
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  ABSTRACT: So far, no supersymmetric particles have been detected at the Large Hadron Collider (LHC). However, the recent Higgs results have interesting implications for the SUSY parameter space. In this paper, we study the consequences of an LHC Higgs signal for a model with non-universal gaugino masses in the context of SU(5) unification. The gaugino mass ratios associated with the higher representations produce viable spectra that are largely inaccessible to the current LHC and direct dark matter detection experiments. Thus, in light of the Higgs results, the non-observation of SUSY is no surprise.
  02/2012;