Search for low-mass resonances decaying into two jets and produced in association with a photon using pp collisions at √s=13TeV with the ATLAS detector

Abraham, N L, Allbrooke, B M M, Asquith, L, Cerri, A, Jones, S D, De Santo, A, Salvatore, F, Shaw, K, Stevenson, T J, Suruliz, K, Sutton, M R, Tresoldi, F, Vivarelli, I, Trovato, F, Winkels, E, The ATLAS Collaboration, and others, (2019) Search for low-mass resonances decaying into two jets and produced in association with a photon using pp collisions at √s=13TeV with the ATLAS detector. Physics Letters B, 795. pp. 56-75. ISSN 0370-2693

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Abstract

A search is performed for localised excesses in dijet mass distributions of low-dijet-mass events produced in association with a high transverse energy photon. The search uses up to 79.8fb−1of LHC proton–proton collisions collected by the ATLAS experiment at a centre-of-mass energy of 13TeV during 2015–2017. Two variants are presented: one which makes no jet flavour requirements and one which requires both jets to be tagged as b-jets. The observed mass distributions are consistent with multi-jet processes in the Standard Model. The data are used to set upper limits on the production cross-section for a benchmark Z'model and, separately, on generic Gaussian-shape contributions to the mass distributions, extending the current ATLAS constraints on dijet resonances to the mass range between 225 and 1100GeV.

Item Type: Article
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Subjects: Q Science > QC Physics
Depositing User: Amelia Redman
Date Deposited: 18 Sep 2019 14:18
Last Modified: 08 Oct 2019 10:15
URI: http://sro.sussex.ac.uk/id/eprint/85914

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