Medium-induced modification of Z-tagged charged particle yields in Pb+ Pb collisions at 5.02 TeV with the ATLAS detector

0551220 - FZÚ 2022 RIV US eng J - Článek v odborném periodiku
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 … celkem 2945 autorů
Medium-induced modification of Z-tagged charged particle yields in Pb+ Pb collisions at 5.02 TeV with the ATLAS detector.
Physical Review Letters. Roč. 126, č. 7 (2021), č. článku 072301. ISSN 0031-9007. E-ISSN 1079-7114
Grant CEP: GA MŠMT(CZ) LTT17018
Výzkumná infrastruktura: CERN-CZ II - 90104
Institucionální podpora: RVO:68378271
Klíčová slova: ATLAS * CERN LHC Coll * transverse momentum * kinematics * 5020 GeV-cms/nucleon
Obor OECD: Particles and field physics
Impakt faktor: 9.185, rok: 2021
Způsob publikování: Open access

The yield of charged particles opposite to a Z boson with large transverse momentum (pT) is measured in 260  pb-1 of pp and 1.7  nb-1 of Pb+Pb collision data at 5.02 TeV per nucleon pair recorded with the ATLAS detector at the Large Hadron Collider. The Z boson tag is used to select hard-scattered partons with specific kinematics, and to observe how their showers are modified as they propagate through the quark-gluon plasma created in Pb+Pb collisions. Compared with pp collisions, charged-particle yields in Pb+Pb collisions show significant modifications as a function of charged-particle pT in a way that depends on event centrality and Z boson pT. The data are compared with a variety of theoretical calculations and provide new information about the medium-induced energy loss of partons in a pT regime difficult to measure through other channels.
Trvalý link: http://hdl.handle.net/11104/0326669