Exploring light supersymmetry with GAMBIT

Abstract

I summarize a recent study by the GAMBIT Collaboration in which we investigated the combined collider constraints on the chargino and neutralino sector of the Minimal Supersymmetric Standard Model. Through a large fit using GAMBIT we found that current ATLAS and CMS results with 36 fb${}^{-1}$ of 13 TeV LHC collision data do not provide a general constraint on the lightest neutralino and chargino masses. Further, we found that a pattern of excesses in some of the LHC analyses can be fit in a subset of the model parameter space. The excess has an estimated local significance of 3.3$\sigma$ based on the 13 TeV results alone, and 2.9$\sigma$ when 13 TeV and 8 TeV results are combined.

arXiv comment4 pages, 1 figure, contribution to the 2019 QCD session of the 54th Rencontres de Moriond

References in corpus (7)

• Search for electroweak production of supersymmetric particles in final states with two or three leptons at $\sqrt{s}=13$ TeV with the ATLAS detector
• GAMBIT: The Global and Modular Beyond-the-Standard-Model Inference Tool
• Combined collider constraints on neutralinos and charginos
• ColliderBit: a GAMBIT module for the calculation of high-energy collider observables and likelihoods
• Search for chargino-neutralino production using recursive jigsaw reconstruction in final states with two or three charged leptons in proton-proton collisions at $\sqrt{s}$=13 TeV with the ATLAS detector
• Search for supersymmetry in events with four or more leptons in $\sqrt{s}=13$ TeV $pp$ collisions with ATLAS
• SpecBit, DecayBit and PrecisionBit: GAMBIT modules for computing mass spectra, particle decay rates and precision observables

Cited by in corpus (1)

• QCD and High Energy Interactions: MORIOND 2019 Theory Summary