Measurement of nuclear modification factors of gamma(1S)), gamma(2S), and gamma(3S) mesons in PbPb collisions at root s(NN)=5.02 TeV
File(s)
Published version
Author(s)
Type
Journal Article
Abstract
The cross sections for ϒ(1S), ϒ(2S), and ϒ(3S) production in lead–lead (PbPb) and proton–proton (pp) collisions at TeV have been measured using the CMS detector at the LHC. The nuclear modification factors, , derived from the PbPb-to- ratio of yields for each state, are studied as functions of meson rapidity and transverse momentum, as well as PbPb collision centrality. The yields of all three states are found to be significantly suppressed, and compatible with a sequential ordering of the suppression, . The suppression of ϒ(1S) is larger than that seen at , although the two are compatible within uncertainties. The upper limit on the of integrated over , rapidity and centrality is 0.096 at 95% confidence level, which is the strongest suppression observed for a quarkonium state in heavy ion collisions to date.
Date Issued
2019-03-10
Date Acceptance
2019-01-07
Citation
Physics Letters B, 2019, 790, pp.270-293
ISSN
0370-2693
Publisher
Elsevier
Start Page
270
End Page
293
Journal / Book Title
Physics Letters B
Volume
790
Copyright Statement
© 2019 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
Identifier
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000460118200032&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
Subjects
Science & Technology
Physical Sciences
Astronomy & Astrophysics
Physics, Nuclear
Physics, Particles & Fields
Physics
CMS
Bottomonium
Quarkonium suppression
Quark gluon plasma
Heavy ion collisions
PLUS AU COLLISIONS
J/PSI PRODUCTION
SUPPRESSION
MODEL
Publication Status
Published
Date Publish Online
2019-01-17