The LHC Confronts the pMSSM

We explore the impact of current (7+8 TeV) and future (14 TeV) LHC searches on the range of viable sparticle spectra within the 19/20 – dimensional phenomenological MSSM (pMSSM). Considering both neutralino and gravitino LSPs, we compare our results with simplified model exclusion limits and describ...

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Bibliographic Details
Published inNuclear and particle physics proceedings Vol. 273-275; no. C; pp. 509 - 515
Main Author Cahill-Rowley, Matthew
Format Journal Article
LanguageEnglish
Published United States Elsevier B.V 01.04.2016
Elsevier
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Summary:We explore the impact of current (7+8 TeV) and future (14 TeV) LHC searches on the range of viable sparticle spectra within the 19/20 – dimensional phenomenological MSSM (pMSSM). Considering both neutralino and gravitino LSPs, we compare our results with simplified model exclusion limits and describe important cases where the pMSSM results differ significantly from the simplified model descriptions. We also consider models that are poorly constrained by LHC data because of unusual decay topologies and/or displaced decays, and discuss ways to improve the LHC sensitivity in these scenarios. Finally, motivated by naturalness, we examine the sensitivity of current searches to models with light stops and to a specialized set of models with fine-tuning better than 1%. We show that the 14 TeV LHC will be a very powerful probe of natural pMSSM models.
Bibliography:USDOE Office of Science (SC)
AC02-76SF00515
ISSN:2405-6014
2405-6022
DOI:10.1016/j.nuclphysbps.2015.09.075