LHC "excesses": Have we found SUSY?

28 Aug 2015, 16:30
20m
Mountain ()

Mountain

Supersymmetry Phenomenology and Experiment SUSY Expt. and Phenomenology

Speaker

Seng Pei Liew (University of Tokyo)

Description

Recent Supersymmetry (SUSY) collider search results have reported intriguing excesses at the 8 TeV run of the LHC. An excess of statistical significance 2.6 sigma in the invariant mass distribution of the opposite-sign same-flavor (OSSF) lepton pair has been found by the CMS collaboration (off-Z excess). Similar final state, albeit with different distribution of invariant mass, has been reported by the ATLAS collaboration at statistical significance of 3.0 sigma (on-Z excess). In this talk, I will describe our attempt to interpret the excesses within the framework of simplified SUSY models. For the off-Z excess, we do not find favorable SUSY scenario that can accommodate the excess without violating other LHC constraints from null search results. I will also review the status of the on-Z excess (which has been found to be stringently constrained by other LHC searches), and discuss the interpretation of the excess with goldstini models. Part of this talk is based on arXiv:1502.05712.

Primary authors

Kazuki Sakurai (King's College) Philipp Grothaus (King's College) Seng Pei Liew (University of Tokyo)

Presentation Materials