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

ATLAS Collaboration, Paul Newman

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)
126 Downloads (Pure)

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.

Original languageEnglish
Pages (from-to)56-75
Number of pages20
JournalPhysical Review Letters
Volume795
Early online date30 May 2019
DOIs
Publication statusPublished - 10 Aug 2019

Bibliographical note

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/

Keywords

  • hep-ex

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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