Suppression of non-prompt J/ψ, prompt J/ψ, and Υ (1S) in PbPb collisions at √sNN=2.76 TeV
Open access
Datum
2012-05Typ
- Journal Article
ETH Bibliographie
yes
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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. Mehr anzeigen
Persistenter Link
https://doi.org/10.3929/ethz-b-000052181Publikationsstatus
publishedExterne Links
Zeitschrift / Serie
Journal of High Energy PhysicsBand
Seiten / Artikelnummer
Verlag
SpringerThema
Heavy IonsOrganisationseinheit
03381 - Pauss, Felicitas (emeritus)
03593 - Dissertori, Günther / Dissertori, Günther
03904 - Wallny, Rainer / Wallny, Rainer
08803 - Grab, Christoph (Tit.Prof.)
ETH Bibliographie
yes
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