English

More Energy, More Searches, but the pMSSM Lives On

High Energy Physics - Phenomenology 2013-08-09 v2 High Energy Physics - Experiment

Abstract

We further examine the capability of the 7 and 8 TeV LHC to explore the parameter space of the p(henomenological)MSSM with neutralino LSPs. Here we present an updated study employing all of the relevant ATLAS SUSY analyses, as well as all relevant LHC non-MET searches, whose data were publically available as of mid-September 2012. We find that roughly 1/3 of our pMSSM model points are excluded at present with an important role being played by both the heavy flavor and multi-lepton searches, as well as those for heavy stable charged particles. Nonetheless, we find that light gluinos, 1st/2nd generation squarks, and stop/sbottoms (\lsim 400-700 GeV), as well as models with 1% fine-tuning or better, are still viable in the pMSSM. In addition, we see that increased luminosity at 8 TeV is unlikely to significantly improve the reach of the "vanilla" searches. The impact of these null searches on the SUSY sparticle spectrum is discussed in detail and the implications of these results for models with low fine-tuning, a future lepton collider and dark matter searches are examined.

Keywords

Cite

@article{arxiv.1211.1981,
  title  = {More Energy, More Searches, but the pMSSM Lives On},
  author = {Matthew W. Cahill-Rowley and JoAnne L. Hewett and Ahmed Ismail and Thomas G. Rizzo},
  journal= {arXiv preprint arXiv:1211.1981},
  year   = {2013}
}

Comments

33 pages, 9 figures