학술논문
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
Document Type
Author
Aaboud, M; Åkesson, Torsten; Bocchetta, Simona; Bryngemark, Lene; Corrigan, Eric; Doglioni, Caterina; Gregersen, Kristian; Brottmann Hansen, Eva; Hedberg, Vincent; Jarlskog, Göran; Kalderon, Charles; Kellermann, Edgar; Konya, Balazs; Lytken, Else; Mankinen, Katja; Marcon, Caterina; Mjörnmark, Ulf; Mullier, Geoffrey; Pöttgen, Ruth; Poulsen, Trine; Skorda, Eleni; Smirnova, Oxana; Zwalinski, L
Source
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics eSSENCE: The e-Science Collaboration. 795:56-75
Subject
Language
English
ISSN
0370-2693
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. © 2019 The Author