Search for new resonances in mass distributions of jet pairs using 139 fb −1 of pp collisions at √s = 13 TeV with the ATLAS detector

Abstract

A search for new resonances decaying into a pair of jets is reported using the dataset of proton-proton collisions recorded at s = 13 TeV with the ATLAS detector at the Large Hadron Collider between 2015 and 2018, corresponding to an integrated luminosity of 139 fb−1. The distribution of the invariant mass of the two leading jets is examined for local excesses above a data-derived estimate of the Standard Model background. In addition to an inclusive dijet search, events with jets identified as containing b-hadrons are examined specifically. No significant excess of events above the smoothly falling background spectra is observed. The results are used to set cross-section upper limits at 95% confidence level on a range of new physics scenarios. Model-independent limits on Gaussian-shaped signals are also reported. The analysis looking at jets containing b-hadrons benefits from improvements in the jet flavour identification at high transverse momentum, which increases its sensitivity relative to the previous analysis beyond that expected from the higher integrated luminosity.

Metadata

Item Type:	Article
Authors/Creators:	Aad, G Abbott, B Abbott, DC Abed Abud, A Abeling, K Abhayasinghe, DK Abidi, SH AbouZeid, OS Abraham, NL Abramowicz, H Abreu, H Abulaiti, Y Acharya, BS Achkar, B Adachi, S Adam, L Adam Bourdarios, C Adamczyk, L Adamek, L Adelman, J Adersberger, M Adiguzel, A Adorni, S Adye, T Affolder, AA Afik, Y Agapopoulou, C Agaras, MN Aggarwal, A Agheorghiesei, C Aguilar-Saavedra, JA Ahmadov, F Ahmed, WS Ai, X Aielli, G Akatsuka, S Åkesson, TPA Akilli, E Akimov, AV Al Khoury, K Alberghi, GL Albert, J Alconada Verzini, MJ Alderweireldt, S Aleksa, M Aleksandrov, IN Alexa, C Alexopoulos, T Alfonsi, A Alfonsi, F Alhroob, M Ali, B Aliev, M Alimonti, G Alkire, SP Allaire, C Allbrooke, BMM Allen, BW Allport, PP Aloisio, A Alonso, A Alonso, F Alpigiani, C Alshehri, AA Alvarez Estevez, M Álvarez Piqueras, D Alviggi, MG Amaral Coutinho, Y Ambler, A Ambroz, L Amelung, C Amidei, D Amor Dos Santos, SP Amoroso, S Amrouche, CS An, F Anastopoulos, C Andari, N Andeen, T Anders, CF Anders, JK Andreazza, A Andrei, V Anelli, CR Angelidakis, S Angerami, A Anisenkov, AV Annovi, A Antel, C Anthony, MT Antipov, E Antonelli, M Antrim, DJA Anulli, F Aoki, M Aparisi Pozo, JA Aperio Bella, L Araque, JP Araujo Ferraz, V Araujo Pereira, R
Copyright, Publisher and Additional Information:	© 2020 The Author(s). This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited
Keywords:	Exotics; Hadron-Hadron scattering (experiments); Jets
Dates:	Accepted: 17 February 2020 Published (online): 25 March 2020 Published: 25 March 2020
Institution:	The University of Sheffield
Academic Units:	The University of Sheffield > Faculty of Science (Sheffield) > Department of Physics and Astronomy (Sheffield)
Depositing User:	Symplectic Sheffield
Date Deposited:	21 Apr 2020 15:59
Last Modified:	21 Apr 2020 15:59
Status:	Published
Publisher:	Springer Verlag
Refereed:	Yes
Identification Number:	10.1007/JHEP03(2020)145
Open Archives Initiative ID (OAI ID):	oai:eprints.whiterose.ac.uk:159660

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Search for new resonances in mass distributions of jet pairs using 139 fb −1 of pp collisions at √s = 13 TeV with the ATLAS detector

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