Publication: ϒ suppression at forward rapidity in Pb–Pb collisions at sNN=5.02TeV
Дата
2019
Авторы
Acharya, S.
Acosta, F. T.
Adamova, D.
Adolfsson, J.
Belyaev, V.
Bogdanov, A.
Grigoriev, V.
Kaplin, V.
Kondratyeva, N.
Loginov, V.
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Аннотация
© 2018 Inclusive ϒ(1S) and ϒ(2S) production have been measured in Pb–Pb collisions at the centre-of-mass energy per nucleon–nucleon pair sNN=5.02 TeV, using the ALICE detector at the CERN LHC. The ϒ mesons are reconstructed in the centre-of-mass rapidity interval 2.5<y<4 and in the transverse-momentum range pT<15 GeV/c, via their decays to muon pairs. In this Letter, we present results on the inclusive ϒ(1S) nuclear modification factor RAA as a function of collision centrality, transverse momentum and rapidity. The ϒ(1S) and ϒ(2S) RAA, integrated over the centrality range 0–90%, are 0.37±0.02(stat)±0.03(syst) and 0.10±0.04(stat)±0.02(syst), respectively, leading to a ratio RAA ϒ(2S)/RAA ϒ(1S) of 0.28±0.12(stat)±0.06(syst). The observed ϒ(1S) suppression increases with the centrality of the collision and no significant variation is observed as a function of transverse momentum and rapidity.
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ϒ suppression at forward rapidity in Pb–Pb collisions at sNN=5.02TeV / Acharya, S. [et al.] // Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. - 2019. - 790. - P. 89-101. - 10.1016/j.physletb.2018.11.067
URI
https://www.doi.org/10.1016/j.physletb.2018.11.067
https://www.scopus.com/record/display.uri?eid=2-s2.0-85060196749&origin=resultslist
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000460118200010
https://openrepository.mephi.ru/handle/123456789/16459
https://www.scopus.com/record/display.uri?eid=2-s2.0-85060196749&origin=resultslist
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000460118200010
https://openrepository.mephi.ru/handle/123456789/16459