Measurement of the nuclear modification factor of b-jets in 5.02 TeV Pb+Pb collisions with the ATLAS detector

0577552 - FZÚ 2024 RIV DE eng J - Journal Article
Aad, G. - Abbott, B. - Abbott, D.C. - Chudoba, Jiří - Hejbal, Jiří - Jačka, Petr - Kepka, Oldřich - Kroll, Jiří - Kupčo, Alexander - Latoňová, Věra - Lokajíček, Miloš - Lysák, Roman - Marčišovský, Michal - Mikeštíková, Marcela - Němeček, Stanislav - Penc, Ondřej - Šícho, Petr - Staroba, Pavel - Svatoš, Michal - Taševský, Marek … Total 2919 authors
Measurement of the nuclear modification factor of b-jets in 5.02 TeV Pb+Pb collisions with the ATLAS detector.
European Physical Journal C. Roč. 83, č. 5 (2023), č. článku 438. ISSN 1434-6044. E-ISSN 1434-6052
Research Infrastructure: CERN-CZ III - 90240
Institutional support: RVO:68378271
Keywords : ATLAS * heavy ion: scattering * lead * pp: scattering * energy loss
OECD category: Particles and field physics
Impact factor: 4.4, year: 2022
Method of publishing: Open access

This paper presents a measurement of b-jet production in Pb+Pb and pp collisions at sNN=5.02sNN​​ ​=5.02 TeV with the ATLAS detector at the LHC. The measurement uses 260 pb−1pb−1 of pp collisions collected in 2017 and 1.4 nb−1nb−1 of Pb+Pb collisions collected in 2018. In both collision systems, jets are reconstructed via the anti-ktkt​ algorithm. The b-jets are identified from a sample of jets containing muons from the semileptonic decay of b-quarks using template fits of the muon momentum relative to the jet axis. In pp collisions, b-jets are reconstructed for radius parameters R=0.2R=0.2 and R=0.4R=0.4, and only R=0.2R=0.2 jets are used in Pb+Pb collisions. For comparison, inclusive R=0.2R=0.2 jets are also measured using 1.7 nb−1nb−1 of Pb+Pb collisions collected in 2018 and the same pp collision data as the b-jet measurement.
Permanent Link: https://hdl.handle.net/11104/0346669