Journal article
Suppression of non-prompt J/ψ, prompt J/ψ, and Υ(1S) in PbPb collisions at sNN−−−√=2.76 TeV
The journal of high energy physics, Vol.2012(5), 63
01/01/2012
DOI: 10.1007/JHEP05(2012)063
Abstract
Yields of prompt and non-prompt J/ψ, as well as Υ(1S) mesons, are measured by the CMS experiment via their μ + μ − decays in PbPb and pp collisions at sNN−−−√=2.76 TeV 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/ψ 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/ψ, which is sensitive to the in-medium b-quark energy loss, is measured for the first time. Also the low-p T Υ(1S) mesons are suppressed in PbPb collisions.
Details
- Title: Subtitle
- Suppression of non-prompt J/ψ, prompt J/ψ, and Υ(1S) in PbPb collisions at sNN−−−√=2.76 TeV
- Creators
- CMS Collaboration
- Contributors
- Y Onel (Contributor) - University of Iowa, Physics and Astronomy
- Resource Type
- Journal article
- Publication Details
- The journal of high energy physics, Vol.2012(5), 63
- Publisher
- SISSA 2012
- DOI
- 10.1007/JHEP05(2012)063
- ISSN
- 1029-8479
- eISSN
- 1029-8479
- Language
- English
- Date published
- 01/01/2012
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984199713502771
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