Search for squarks and gluinos in events with hadronically decaying tau leptons, jets and missing transverse momentum in proton?proton collisions at s√=13 TeV recorded with the ATLAS detector

H. WAHLBERG Y ATLAS COLLABORATION

EUROPEAN PHYSICAL JOURNAL C - PARTICLES AND FIELDS

SPRINGER

Lugar: Berlin; Año: 2016

1434-6044

A search for supersymmetry in events with large missing transverse momentum, jets, andat least one hadronically √ decaying tau lepton has been performed using 3.2 fb −1 of proton?proton collision data at s = 13 TeV recorded by the ATLAS detector at the Large HadronCollider in 2015. Two exclusive final states are considered, with either exactly one or atleast two tau leptons. No excess over the Standard Model prediction is observed in thedata. Results are interpreted in the context of gauge-mediated supersymmetry breaking anda simplified model of gluino pair production with tau-rich cascade decays, substantiallyimproving on previous limits. In the GMSB model considered, supersymmetry-breakingscale (Λ) values below 92 TeV are excluded at the 95% confidence level, corresponding togluino masses below 2000 GeV. For large values of tan β, values of Λ up to 107 TeV andgluino masses up to 2300 GeV are excluded. In the simplified model, gluino masses areexcluded up to 1570 GeV for neutralino masses around 100 GeV. Neutralino masses upto 700 GeV are excluded for all gluino masses between 800 GeV and 1500 GeV, while thestrongest exclusion of 750 GeV is achieved for gluino masses around 1400 GeV.