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| CMS-PAS-HIN-12-001 | ||
| Measurement of the azimuthal anisotropy of prompt and non-prompt J/psi in PbPb collisions at sqrt(sNN) = 2.76 TeV | ||
| CMS Collaboration | ||
| 2013 | ||
| Abstract: This document presents the azimuthal anisotropy analysis of prompt $J/\psi \rightarrow \mu^{+}\mu^{-}$ measured in collisions at $\sqrt{s_{_{NN}}} = 2.76$ TeV, based on a data sample collected during the 2011 PbPb run with the CMS experiment at the LHC, which corresponds to an integrated luminosity of 150 $\mu \text{b}^{-1}$. The analysis is performed using the event-plane method. Amplitudes of the second Fourier component ($v_2$) of the angular distributions are presented as a function of the prompt $J/\psi$ transverse momentum, p$_\text{T}$, for different collision centrality classes, in a broad kinematic range, < \text{p}_\text{T} < 30$\,GeV/$c$ and $|\text{y}| < 2.4$. The measured $v_{2}$, averaged in the centrality 10--60\% for prompt $J/\psi$ with .5<\text{p}_\text{T}<30$\,GeV/$c$ measured in $|\text{y}|<2.4$ is .054 \pm 0.013 (\text{stat}) \pm 0.006 (\text{syst})$. A non-zero $v_2$ is measured in all the kinematic bins studied. The observed anisotropy shows no significant centrality or rapidity dependence when integrated over rapidity and centrality, respectively. The $v_2$ of prompt $J/\psi$, measured in the 10--60\% centrality events is compatible with a p$_\text{T}$-independent anisotropy. | ||
| Links: CDS record (PDF) ; inSPIRE record ; Public twiki page ; CADI line (restricted) ; | ||
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Compact Muon Solenoid LHC, CERN |
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