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

Salvatore, F, De Santo, A, Vivarelli, I, Cerri, A, Asquith, L, Suruliz, K, Sutton, M R, Allbrooke, B M M, Chavez Barajas, C A, Santoyo Castillo, I and The ATLAS collaboration, (2016) 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. EPJ direct, 76 (12). a683. ISSN 1435-3725

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Abstract

A search for supersymmetry in events with large missing transverse momentum, jets, and at 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 Hadron Collider in 2015. Two exclusive final states are considered, with either exactly one or at least two tau leptons. No excess over the Standard Model prediction is observed in the data. Results are interpreted in the context of gauge-mediated supersymmetry breaking and a simplified model of gluino pair production with tau-rich cascade decays, substantially improving on previous limits. In the GMSB model considered, supersymmetry-breaking scale (Λ) values below 92 TeV are excluded at the 95% confidence level, corresponding to gluino masses below 2000 GeV. For large values of tanβ, values of Λ up to 107 TeV and gluino masses up to 2300 GeV are excluded. In the simplified model, gluino masses are excluded up to 1570 GeV for neutralino masses around 100 GeV. Neutralino masses up to 700 GeV are excluded for all gluino masses between 800 GeV and 1500 GeV, while the strongest exclusion of 750 GeV is achieved for gluino masses around 1400 GeV.

Item Type: Article
Keywords: ATLAS, LHC, Supersymmetry, BSM, Tau lepton
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Research Centres and Groups: Experimental Particle Physics Research Group
Subjects: Q Science > QC Physics > QC0770 Nuclear and particle physics. Atomic energy. Radioactivity > QC0793 Elementary particle physics
Depositing User: Fabrizio Salvatore
Date Deposited: 07 Nov 2016 13:29
Last Modified: 12 Sep 2017 15:58
URI: http://sro.sussex.ac.uk/id/eprint/65311

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