|
Title
|
|
|
|
Suppression of non-prompt , prompt , and (1S) in PbPb collisions at =2.76 TeV
| |
|
Author
|
|
|
|
| |
|
Institution/Organisation
|
|
|
|
CMS Collaboration
| |
|
Abstract
|
|
|
|
| Yields of prompt and non-prompt J/psi ,as well as Upsilon(1S) mesons, are measured by the CMS experiment via their mu(+)mu(-) decays in PbPb and pp collisions at root s(NN) - 2.76TeV for quarkonium rapidity |y| < 2.4. Differential cross sections and nuclear modification factors are reported as functions of y and transverse momentum p(T), as well as collision centrality. For prompt J/psi with relatively high p(T) (6.5 < p(T) < 30 GeV/c), a strong, centrality-dependent suppression is observed in PbPb collisions, compared to the yield in pp collisions scaled by the number of inelastic nucleon-nucleon collisions. In the same kinematic range, a suppression of non-prompt J/psi, which is sensitive to the in-medium b-quark energy loss, is measured for the first time. Also the low-p(T) Upsilon(1S) mesons are suppressed in PbPb collisions. |
| |
|
Language
|
|
|
|
English
| |
|
Source (journal)
|
|
|
|
Journal of high energy physics. - Bristol
| |
|
Publication
|
|
|
|
Bristol
:
2012
| |
|
ISSN
|
|
|
|
1126-6708
1029-8479
[online]
| |
|
DOI
|
|
|
|
10.1007/JHEP05(2012)063
| |
|
Volume/pages
|
|
|
|
5
(2012)
, 54 p.
| |
|
Article Reference
|
|
|
|
063
| |
|
ISI
|
|
|
|
000305236000063
| |
|
Medium
|
|
|
|
E-only publicatie
| |
|
Full text (Publisher's DOI)
|
|
|
|
| |
|
Full text (open access)
|
|
|
|
| |
|