12-18 August 2012
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Detailed measurements of charmonium suppression in PbPb collisions at 2.76 TeV with CMS

14 Aug 2012, 14:15


Oral Presentation Heavy flavor and quarkonium production Parallel 1D: Heavy Flavor & Quarkonia (Chair R. Granier de Cassagnac)


Dong Ho Moon (Korea University (KR))


CMS has measured the nuclear modification factors of prompt J/psi in PbPb collisions at sqrt(sNN) = 2.76 TeV. For prompt J/psi with relatively high pT (6.5 < pT < 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. During the 2011 data taking period the data sample has been increased by a factor of twenty, which allows for more detailed charmonium measurements, e.g. mapping the transverse momentum and centrality dependence of the nuclear modification simultaneously. New results on charmonium suppression based on the full available 2011 data sample will be reported.

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