Search for R-parity-violating supersymmetric particles in multi-jet final states produced in p -p collisions at s √ =13 TeV using the ATLAS detector at the LHC

The ATLAS Collaboration, , Abraham, N L, Allbrooke, B M M, Asquith, L, Cerri, A, Chavez Barajas, C A, De Santo, A, Jones, S, Lerner, G, Miano, F, Salvatore, F, Santoyo Castillo, I, Shaw, K, Shehu, C Y, Stevenson, T J, Suruliz, K, Sutton, M R, Tresoldi, F, Vivarelli, I, Winkels, E and Winston, O J (2018) Search for R-parity-violating supersymmetric particles in multi-jet final states produced in p -p collisions at s √ =13 TeV using the ATLAS detector at the LHC. Physics Letters B, 785. pp. 136-158. ISSN 0370-2693

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Abstract

Results of a search for gluino pair production with subsequent R-parity-violating decays to quarks are presented. This search uses 36.1 fb −1 of data collected by the ATLAS detector in proton-proton collisions with a center-of-mass energy of s √ =13 TeV at the LHC. The analysis is performed using requirements on the number of jets and the number of jets tagged as containing a b -hadron as well as a topological observable formed by the scalar sum of masses of large-radius jets in the event. No significant excess above the expected Standard Model background is observed. Limits are set on the production of gluinos in models with the R-parity-violating decays of either the gluino itself (direct decay) or the neutralino produced in the R-parity-conserving gluino decay (cascade decay). In the gluino cascade decay model, gluinos with masses below 1850 GeV are excluded for 1000 GeV neutralino mass. For the gluino direct decay model, the 95% confidence level upper limit on the cross section times branching ratio varies between 0.80 fb at m g ~ = 900 GeV and 0.011 fb at m g ~ = 1800 GeV.

Item Type: Article
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
Depositing User: Alice Jackson
Date Deposited: 12 Nov 2018 11:40
Last Modified: 02 Jul 2019 13:52
URI: http://sro.sussex.ac.uk/id/eprint/80132

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