Research Papers in Physics and Astronomy


Date of this Version



PHYSICAL REVIEW D 92, 035015 (2015)


Copyright 2015 American Physical Society

DOI: 10.1103/PhysRevD.92.035015


The search for supersymmetry at run 1 of the LHC has resulted in gluino mass limits [?] [?] 1.3 TeV for the case [?] [?] [?] and in models with gaugino mass unification. The increased energy and, ultimately, luminosity of LHC13 will explore the range [?] ~ 1.3-2 TeV. We examine how the discovery of SUSY via gluino pair production would unfold via a comparative analysis of three LSP archetype scenarios: (1) mSUGRA/CMSSM model with a binolike LSP, (2) charged SUSY breaking (CSB) with a winolike LSP, and (3) SUSY with radiatively driven naturalness (RNS) and a Higgsino-like LSP. In all three cases we expect heavy-to-very-heavy squarks as suggested by a decoupling solution to the SUSY flavor and CP problems and by the gravitino problem. For all cases, initial SUSY discovery would likely occur in the multi-b-jet + [?] channel. The CSB scenario would be revealed by the presence of highly ionizing, terminating tracks from quasistable charginos. As further data accrue, the RNS scenario with 100–200 GeV Higgsino-like LSPs would be revealed by the buildup of a mass edge/bump in the opposite sign/same flavor dilepton invariant mass which is bounded by the neutralino mass difference. The mSUGRA/CMSSM archetype would contain neither of these features but would be revealed by a buildup of the usual multilepton cascade decay signatures.