Publication: Nuclear modification of Y states in pPb collisions at sNN=5.02TeV
Дата
2022
Авторы
Tumasyan, A.
Adam, W.
Ambrogi, F.
Bergauer, T.
Chadeeva, M.
Parygin, P.
Philippov, D.
Popova, E.
Rusinov, V.
Matveev, V.
Journal Title
Journal ISSN
Volume Title
Издатель
Аннотация
Production cross sections of [Formula presented], [Formula presented], and [Formula presented] states decaying into [Formula presented] in proton-lead (pPb) collisions are reported using data collected by the CMS experiment at sNN=5.02TeV. A comparison is made with corresponding cross sections obtained with pp data measured at the same collision energy and scaled by the Pb nucleus mass number. The nuclear modification factor for [Formula presented] is found to be [Formula presented]. Similar results for the excited states indicate a sequential suppression pattern, such that [Formula presented]. The suppression of all states is much less pronounced in pPb than in PbPb collisions, and independent of transverse momentum [Formula presented] and center-of-mass rapidity [Formula presented] of the individual [Formula presented] state in the studied range [Formula presented] and [Formula presented]. Models that incorporate final-state effects of bottomonia in pPb collisions are in better agreement with the data than those which only assume initial-state modifications. © 2022 The Author(s)
Описание
Ключевые слова
Bottomonium , CMS , Heavy ion collisions , Quark-gluon plasma , Quarkonium suppression
Цитирование
Nuclear modification of Y states in pPb collisions at sNN=5.02TeV / Tumasyan, A. [et al.] // Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. - 2022. - 835. - 10.1016/j.physletb.2022.137397