Search for light resonances decaying to boosted quark pairs and produced in association with a photon or a jet in proton-proton collisions at root s=13 TeV with the ATLAS detector

M. Aaboud, G. Aad, B. Abbott, O. Abdinov, B Abeloos, S.H. Abidi, Ossama Sherif Alexander AbouZeid, NL Abraham, H. Abramowicz, H. Abreu, R. Abreu, Y. Abulaiti, B.S. Acharya, Sosuke Adachi, L. Adamczyk, J. Adelman, M. Adersberger, T. Adye, A. A. Affolder, Y. AfikC. Agheorghiesei, J. A. Aguilar-Saavedra, F. Ahmadov, G. Aielli, S. Akatsuka, E. Akilli, A. V. Akimov, Peter Henrik Hansen, Jørgen Beck Hansen, Alejandro Alonso Diaz, Mogens Dam, Jørn Dines Hansen, James William Monk, Troels Christian Petersen, Graig Wiglesworth, Geert-Jan Besjes, Milena Bajic, Gorm Aske Gram Krohn Galster, hqz214 hqz214, Simon Holm Stark, Flavia de Almeida Dias, Stefania Xella, ATLAS

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Abstract

This Letter presents a search for new light resonances decaying to pairs of quarks and produced in association with a high-pT photon or jet. The dataset consists of proton–proton collisions with an integrated luminosity of 36.1 fb−1 at a centre-of-mass energy of s=13 TeV recorded by the ATLAS detector at the Large Hadron Collider. Resonance candidates are identified as massive large-radius jets with substructure consistent with a particle decaying into a quark pair. The mass spectrum of the candidates is examined for local excesses above background. No evidence of a new resonance is observed in the data, which are used to exclude the production of a lepto-phobic axial-vector Z boson.

OriginalsprogEngelsk
TidsskriftPhysics Letters B
Vol/bind788
Sider (fra-til)316-335
Antal sider20
ISSN0370-2693
DOI
StatusUdgivet - 10 jan. 2019

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