Compact Muon Solenoid
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| CMS-PAS-HIN-21-008 | ||
| Measurements of the azimuthal anisotropy of charmonia in PbPb collisions at $\sqrt{\smash[b]{s_{_{\mathrm{NN}}}}}= $ 5.02 TeV | ||
| CMS Collaboration | ||
| April 2022 | ||
| Abstract: The second-order ($v_{2}$) and third-order ($v_{3}$) Fourier coefficients describing the azimuthal anisotropy of prompt and nonprompt J/$\psi$ and prompt $\psi$(2S) mesons are measured in PbPb collisions at $\sqrt{\smash[b]{s_{_{\mathrm{NN}}}}}= $ 5.02 TeV. The analysis uses a dataset corresponding to an integrated luminosity of 1.6 nb$^{-1}$ recorded with the CMS detector in 2018. J/$\psi$ and $\psi$(2S) mesons are reconstructed using their dimuon decay channel. The $v_{2}$ and $v_{3}$ values are extracted using the scalar product method and studied as functions of meson transverse momentum and PbPb collision centrality. The measured $v_{2}$ values for the prompt J/$\psi$ mesons are larger than of those of nonprompt J/$\psi$ mesons. The study of azimuthal anisotropy for prompt $\psi$(2S) mesons is reported for the first time, showing $v_{2}$ larger than that of J/$\psi$ mesons. | ||
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Links:
CDS record (PDF) ;
CADI line (restricted) ;
These preliminary results are superseded in this paper, Submitted to JHEP. The superseded preliminary plots can be found here. |
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Compact Muon Solenoid LHC, CERN |
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