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Inclusive, prompt and non-prompt J/ψ production at mid-rapidity in Pb-Pb collisions at √sNN = 2.76 TeV

The ALICE collaboration, Null
•
Adam, J.
•
Adamová, D.
altro
Zyzak, M.
2015
  • journal article

Periodico
JOURNAL OF HIGH ENERGY PHYSICS
Abstract
The transverse momentum (pT) dependence of the nuclear modification factor RAA and the centrality dependence of the average transverse momentum ⟨pT⟩ for inclusive J/ψ have been measured with ALICE for Pb-Pb collisions at √sNN = 2.76TeV in the e+e− decay channel at mid-rapidity (|y| < 0.8). The ⟨pT⟩ is significantly smaller than the one observed for pp collisions at the same centre-of-mass energy. Consistently, an increase of RAA is observed towards low pT. These observations might be indicative of a sizable contribution of charm quark coalescence to the J/ψ production. Additionally, the fraction of non-prompt J/ψ from beauty hadron decays, fB, has been determined in the region 1.5 < pT < 10 GeV/c in three centrality intervals. No significant centrality dependence of fB is observed. Finally, the RAA of non-prompt J/ψ is discussed and compared with model predictions. The nuclear modification in the region 4.5 < pT < 10GeV/c is found to be stronger than predicted by most models.
DOI
10.1007/JHEP07(2015)051
WOS
WOS:000357931400001
Archivio
http://hdl.handle.net/11368/2866010
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84938834279
http://link.springer.com/journal/13130
Diritti
open access
license:digital rights management non definito
FVG url
https://arts.units.it/bitstream/11368/2866010/2/Inclusive, prompt and non-prompt J-Ï production at mid-rapidity in Pb-Pb collisions at â sNN = 2.76 TeV.pdf
Soggetti
  • Hadron-Hadron Scatter...

  • Nuclear and High Ener...

Web of Science© citazioni
55
Data di acquisizione
Mar 23, 2024
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