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Measurement of b-quark fragmentation properties in jets using the decay B <sup>±</sup> → J/ψK <sup>±</sup> in pp collisions at √s = 13 TeV with the ATLAS detector

Aad, G; Abbott, B; Abbott, DC; Abed Abud, A; Abeling, K; Abhayasinghe, DK; Abidi, SH; ... Argyropoulos, S; + view all (2021) Measurement of b-quark fragmentation properties in jets using the decay B <sup>±</sup> → J/ψK <sup>±</sup> in pp collisions at √s = 13 TeV with the ATLAS detector. Journal of High Energy Physics , 2021 (12) , Article 131. 10.1007/JHEP12(2021)131. Green open access

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Abstract

The fragmentation properties of jets containing b-hadrons are studied using charged B mesons in 139 fb−1 of pp collisions at s = 13 TeV, recorded with the ATLAS detector at the LHC during the period from 2015 to 2018. The B mesons are reconstructed using the decay of B± into J/ψK±, with the J/ψ decaying into a pair of muons. Jets are reconstructed using the anti-kt algorithm with radius parameter R = 0.4. The measurement determines the longitudinal and transverse momentum profiles of the reconstructed B hadrons with respect to the axes of the jets to which they are geometrically associated. These distributions are measured in intervals of the jet transverse momentum, ranging from 50 GeV to above 100 GeV. The results are corrected for detector effects and compared with several Monte Carlo predictions using different parton shower and hadronisation models. The results for the longitudinal and transverse profiles provide useful inputs to improve the description of heavy-flavour fragmentation in jets.

Type: Article
Title: Measurement of b-quark fragmentation properties in jets using the decay B <sup>±</sup> → J/ψK <sup>±</sup> in pp collisions at √s = 13 TeV with the ATLAS detector
Open access status: An open access version is available from UCL Discovery
DOI: 10.1007/JHEP12(2021)131
Publisher version: http://doi.org/10.1007/JHEP12(2021)131
Language: English
Additional information: This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third-party material in this article are included in the Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
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
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy
URI: https://discovery.ucl.ac.uk/id/eprint/10141389
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