Correlated Event Excesses in LHC SUSY Searches at 7 & 8 TeV: New Physics or Conspiring Noise?

TL;DR

This paper analyzes LHC SUSY search data at 7 and 8 TeV within a specific F-Theory inspired model, finding consistent bounds on gaugino masses and highlighting the potential for future 13 TeV searches to probe this parameter space.

Contribution

It introduces a novel analysis of multiple independent SUSY search regions within the No-Scale F-SU(5) model, establishing correlated bounds on gaugino masses and a technique for disentangling overlapping search data.

Findings

Lower bound on gaugino mass scale at M_{1/2} >= 680 GeV.

Correlated SUSY search regions intersect with the model space within M_{1/2} = 680-850 GeV.

Potential for future 13 TeV LHC runs to fully probe the model space.

Abstract

We examine the ATLAS and CMS 7 & 8 TeV multijet supersymmetry (SUSY) searches requiring the incidence of a single lepton in the framework of the supersymmetric grand unified model No-Scale Flipped SU(5) with extra vector-like flippon multiplets derived from F-Theory, or F-SU(5) for short. Investigated are five multijet+lepton SUSY searches: 4.7/fb ATLAS 7 TeV gluino and light stop searches, as well as 13/fb ATLAS and 9.7/fb CMS 8 TeV light stop searches. Most significantly, all five leptonic SUSY searches represent statistically independent data samples. Findings show that all five orthogonal sets of leptonic LHC observations give a lower bound to the gaugino mass scale at M_{1/2} >= 680 GeV, with all the current best fits correlating within a narrow region. Furthermore, eight statistically independent LHC SUSY search regions (leptonic + all-hadronic) accessible to the No-Scale F-SU(5) model space intersect with all the currently operating beyond the Standard Model experiments within the range of M_{1/2} = 680-850 GeV, with the upper bound established by the lower experimental limit of the anomalous magnetic moment (g_{mu}-2)/2 of the muon. We emphasize that this region of the F-SU(5) model space may not be fully probed by leptonic SUSY searches at the LHC until the 13 TeV LHC energizes in 2015. Additionally, we describe an efficient technique for the effective statistical disentanglement of searches sensitive to mutually overlapping event spaces.