Measurement of Prompt D[superscript 0] Meson Azimuthal Anisotropy in Pb-Pb Collisions at √sNN = 5.02 TeV
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PhysRevLett.120.202301.pdf
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Author(s)
Sirunyan, A. M.
Tumasyan, A.
Adam, W.
Ambrogi, F.
Asilar, E.
Bergauer, T.
Brandstetter, J.
Brondolin, E.
Dragicevic, M.
Erö, J.
Date Issued
May 2018
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Sirunyan, A. M., et al. “Measurement of Prompt D[superscript 0] Meson Azimuthal Anisotropy in Pb-Pb Collisions at √sNN = 5.02 TeV.” Physical Review Letters, vol. 120, no. 20, May 2018. © 2018 CERN, for the CMS Collaboration
Version
Final published version
Abstract
The prompt D[superscript 0] meson azimuthal anisotropy coefficients, v[subscript 2] and v[subscript 3], are measured at midrapidity (|y|<1.0) in Pb-Pb collisions at a center-of-mass energy √sNN = 5.02 TeV per nucleon pair with data collected by the CMS experiment. The measurement is performed in the transverse momentum (p[subscript T]) range of 1 to 40 GeV/c, for central and midcentral collisions. The v[subscript 2] coefficient is found to be positive throughout the p[subscript T] range studied. The first measurement of the prompt D[superscript 0] meson v[subscript 3] coefficient is performed, and values up to 0.07 are observed for p[subscript T] around 4 GeV/c. Compared to measurements of charged particles, a similar p[subscript T] dependence, but smaller magnitude for p[subscript T]<6 GeV/c, is found for prompt D[superscript 0] meson v[subscript 2] and v[subscript 3] coefficients. The results are consistent with the presence of collective motion of charm quarks at low p[subscript T] and a path length dependence of charm quark energy loss at high p[subscript T], thereby providing new constraints on the theoretical description of the interactions between charm quarks and the quark-gluon plasma.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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DOI of Published Version
http://dx.doi.org/10.1103/PhysRevLett.120.202301
