Measurement of Prompt D0 Meson Azimuthal Anisotropy in Pb-Pb Collisions at sNN =5.02 TeV
The prompt D0 meson azimuthal anisotropy coefficients, v2 and v3, are measured at midrapidity (jyj < 1.0) in Pb-Pb collisions at a center-of-mass energy ffiffiffiffiffiffiffiffi sNN p ¼ 5.02 TeV per nucleon pair with data collected by the CMS experiment. The measurement is performed in the tra...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English English English |
| Published: |
American Physical Society
2018
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/65843/ http://irep.iium.edu.my/65843/ http://irep.iium.edu.my/65843/ http://irep.iium.edu.my/65843/1/65843_Measurement%20of%20Prompt%20D0%20Meson%20Azimuthal_article.pdf http://irep.iium.edu.my/65843/2/65843_Measurement%20of%20Prompt%20D0%20Meson%20Azimuthal_scopus.pdf http://irep.iium.edu.my/65843/13/65843_Measurement%20of%20Prompt%20D0%20Meson%20Azimuthal%20Anisotropy%20in%20Pb-Pb%20Collisions%20at%20sNN%20%3D5.02%20TeV_WOS.pdf |
| Summary: | The prompt D0 meson azimuthal anisotropy coefficients, v2 and v3, are measured at midrapidity
(jyj < 1.0) in Pb-Pb collisions at a center-of-mass energy ffiffiffiffiffiffiffiffi
sNN p ¼ 5.02 TeV per nucleon pair with data
collected by the CMS experiment. The measurement is performed in the transverse momentum (pT)
range of 1 to 40 GeV=c, for central and midcentral collisions. The v2 coefficient is found to be positive
throughout the pT range studied. The first measurement of the prompt D0 meson v3 coefficient is
performed, and values up to 0.07 are observed for pT around 4 GeV=c. Compared to measurements of
charged particles, a similar pT dependence, but smaller magnitude for pT < 6 GeV=c, is found for
prompt D0 meson v2 and v3 coefficients. The results are consistent with the presence of collective motion
of charm quarks at low pT and a path length dependence of charm quark energy loss at high pT, thereby
providing new constraints on the theoretical description of the interactions between charm quarks and the
quark-gluon plasma. |
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