Measurements of jet observables sensitive to b-quark fragmentation in t t ¯ events at the LHC with the ATLAS detector

0562804 - FZÚ 2023 RIV US eng J - Journal Article
Aad, G. - Abbott, B. - Abbott, D.C. - Chudoba, Jiří - Hejbal, Jiří - Hladík, Ondřej - 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 2916 authors
Measurements of jet observables sensitive to b-quark fragmentation in t t ¯ events at the LHC with the ATLAS detector.
Physical Review D. Roč. 106, č. 3 (2022), č. článku 032008. ISSN 2470-0010. E-ISSN 2470-0029
Research Infrastructure: e-INFRA CZ - 90140; CERN-CZ II - 90104
Institutional support: RVO:68378271
Keywords : ATLAS * LHC * vertex: secondary * top: leptonic decay * pp: scattering
OECD category: Particles and field physics
Impact factor: 5, year: 2022
Method of publishing: Open access

Several observables sensitive to the fragmentation of b quarks into b hadrons are measured using 36  fb-1 of s=13  TeV proton-proton collision data collected with the ATLAS detector at the LHC. Jets containing b hadrons are obtained from a sample of dileptonic tt¯ events, and the associated set of charged-particle tracks is separated into those from the primary pp interaction vertex and those from the displaced b-decay secondary vertex. This division is used to construct observables that characterize the longitudinal and transverse momentum distributions of the b hadron within the jet. The measurements have been corrected for detector effects and provide a test of heavy-quark-fragmentation modeling at the LHC in a system where the top-quark decay products are color connected to the proton beam remnants.
Permanent Link: https://hdl.handle.net/11104/0336290