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



Aaboud, M, Aad, G, Abbott, B, Abbott, DC, Abdinov, O, Abud, A Abed, Abhayasinghe, DK, Abidi, SH, AbouZeid, OS, Abraham, NL
et al (show 2908 more authors) (2019) Search for low-mass resonances decaying into two jets and produced in association with a photon using pp collisions √s=13 TeV with the ATLAS detector PHYSICS LETTERS B, 795. pp. 56-75. ISSN 0370-2693, 1873-2445

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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 79.8 fb−1 of LHC proton–proton collisions collected by the ATLAS experiment at a centre-of-mass energy of 13 TeV 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 1100 GeV.

Item Type: Article
Additional Information: 33 pages in total, author list starting page 17, 3 figures, 2 tables, submitted to Phys. Lett. B. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/EXOT-2018-05/
Uncontrolled Keywords: hep-ex, hep-ex
Depositing User: Symplectic Admin
Date Deposited: 28 Jun 2019 13:24
Last Modified: 22 May 2026 21:18
DOI: 10.1016/j.physletb.2019.03.067
Open Access URL: https://www.sciencedirect.com/science/article/pii/...
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URI: https://livrepository.liverpool.ac.uk/id/eprint/3047805
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