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Measurement of beauty production via non-prompt D0 mesons in Pb-Pb collisions at sqrt(sNN) = 5.02 TeVстатья
Статья опубликована в высокорейтинговом журнале
Статья опубликована в журнале из списка Web of Science и/или Scopus- Авторы: ALICE C., Malinina L.
- Журнал: Journal of High Energy Physics
- Том: 2022
- Номер: 12
- Год издания: 2022
- Издательство: IOP Publishing
- Местоположение издательства: [Bristol, UK], England
- Первая страница: 126
- DOI: 10.1007/jhep12(2022)126
- Аннотация: The production of non-prompt D00 mesons from beauty-hadron decays was measured at midrapidity (|y| < 0.5) in Pb-Pb collisions at a nucleon-nucleon center-of-mass energy of sNNsNN = 5.02 TeV with the ALICE experiment at the LHC. Their nuclear modification factor (RAAAA), measured for the first time down to pTT = 1 GeV/c in the 0–10% and 30–50% centrality classes, indicates a significant suppression, up to a factor of about three, for pTT> 5 GeV/c in the 0–10% central Pb-Pb collisions. The data are described by models that include both collisional and radiative processes in the calculation of beauty-quark energy loss in the quark-gluon plasma, and quark recombination in addition to fragmentation as a hadronisation mechanism. The ratio of the non-prompt to prompt D00-meson RAAAA is larger than unity for pTT> 4 GeV/c in the 0–10% central Pb-Pb collisions, as predicted by models in which beauty quarks lose less energy than charm quarks in the quark-gluon plasma because of their larger mass
- Добавил в систему: Малинина Людмила Владимировна