UCL Discovery Stage
UCL home » Library Services » Electronic resources » UCL Discovery Stage

Study of J/ψ meson production inside jets in pp collisions at √s = 8 TeV

The CMS Collaboration; (2020) Study of J/ψ meson production inside jets in pp collisions at √s = 8 TeV. Physics Letters B , 804 , Article 135409. 10.1016/j.physletb.2020.135409. Green open access

[thumbnail of 1-s2.0-S0370269320302136-main.pdf]
Preview
Text
1-s2.0-S0370269320302136-main.pdf - Published Version

Download (855kB) | Preview

Abstract

A study of the production of prompt J/ψ mesons contained in jets in proton-proton collisions at √s = 8 TeV is presented. The analysis is based on data corresponding to an integrated luminosity of 19.1 fb−1 collected with the CMS detector at the LHC. For events with at least one observed jet, the angular separation between the J/ψ meson and the jet is used to test whether the J/ψ meson is part of the jet. The analysis shows that most prompt J/ψ mesons having energy above 15 GeV and rapidity |y| < 1 are contained in jets with pseudorapidity |ηjet| < 1. The differential distributions of the probability to have a J/ψ meson contained in a jet as a function of jet energy for a fixed J/ψ energy fraction are compared to a theoretical model using the fragmenting jet function approach. The data agree best with fragmenting jet function calculations that use a long-distance matrix element parameter set in which prompt J/ψ mesons are predicted to be unpolarized. This technique demonstrates a new way to test predictions for prompt J/ψ production using nonrelativistic quantum chromodynamics.

Type: Article
Title: Study of J/ψ meson production inside jets in pp collisions at √s = 8 TeV
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.physletb.2020.135409
Publisher version: https://doi.org/10.1016/j.physletb.2020.135409
Language: English
Additional information: Copyright © 2020 Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP3.
Keywords: CMS, J/psi Mesons, Jets
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
URI: https://discovery-pp.ucl.ac.uk/id/eprint/10097476
Downloads since deposit
1,152Downloads
Download activity - last month
Download activity - last 12 months
Downloads by country - last 12 months

Archive Staff Only

View Item View Item