Электронный каталог

Статья

Acharya, S.
Measurement of Beauty-Strange Meson Production in Pb–Pb Collisions at *%s&sub(NN) = 5.02 TeV Via Non-Prompt D*+&sub(s) Mesons / S.Acharya, B.Batyunya, C.Ceballos Sanchez, R.A.Diaz, S.Grigoryan, A.Kondratyev, L.Malinina, K.Mikhaylov, P.Nomokonov, V.Pozdniakov, E.Rogochaya, B.Rumyantsev, A.Vodopyanov, [ALICE Collab.] // Physics Letters B [Electronic resource]. – 2023. – Vol.846. – P.137561. – URL: https://doi.org/10.1016/j.physletb.2022.137561. – Bibliogr.:74.

The production yields of non-prompt mesons, namely mesons from beauty-hadron decays, were measured for the first time as a function of the transverse momentum () at midrapidity () in central and semi-central Pb–Pb collisions at a centre-of-mass energy per nucleon pair with the ALICE experiment at the LHC. The mesons and their charge conjugates were reconstructed from the hadronic decay channel , with , in the and intervals for the 0–10% and 30–50% centrality classes, respectively. The measured yields of non-prompt mesons are compared to those of prompt and non-prompt mesons by calculating the ratios of the production yields in Pb–Pb collisions and the nuclear modification factor . The ratio between the of non-prompt and prompt mesons, and that between the of non-prompt and non-prompt mesons in central Pb–Pb collisions are found to be on average higher than unity in the interval with a statistical significance of about and , respectively. The measured ratios are compared with the predictions of theoretical models of heavy-quark transport in a hydrodynamically expanding QGP that incorporate hadronisation via quark recombination



Спец.(статьи,препринты) = С 343 е2 - Взаимодействие релятивистских ядер с ядрами
Спец.(статьи,препринты) = С 346.6 - Резонансы и новые частицы
ОИЯИ = ОИЯИ (JINR)2023