The LHC Confronts the pMSSM

Journal Article · 31 May 2016 · Nuclear and Particle Physics Proceedings

DOI: https://doi.org/10.1016/j.nuclphysbps.2015.09.075 · OSTI ID:1280968

Cahill-Rowley, Matthew ^[1]

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1. SLAC National Accelerator Lab., Menlo Park, CA (United States)

Here 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.

• Research Organization: SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• Grant/Contract Number: AC02-76SF00515
• OSTI ID: 1280968
• Journal Information: Nuclear and Particle Physics Proceedings, Vol. 273-275, Issue C; ISSN 2405-6014
• Publisher: ElsevierCopyright Statement
• Country of Publication: United States
• Language: English