Measurement of D-0 Azimuthal Anisotropy at Midrapidity in Au plus Au Collisions at root S-NN=200 GeV

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F17%3A00475695" target="_blank" >RIV/61389005:_____/17:00475695 - isvavai.cz</a>
Alternative codes found
RIV/68407700:21340/17:00318488
Result on the web
<a href="http://dx.doi.org/10.1103/PhysRevLett.118.212301" target="_blank" >http://dx.doi.org/10.1103/PhysRevLett.118.212301</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevLett.118.212301" target="_blank" >10.1103/PhysRevLett.118.212301</a>

Result language
angličtina
Original language name
Measurement of D-0 Azimuthal Anisotropy at Midrapidity in Au plus Au Collisions at root S-NN=200 GeV
Original language description
We report the first measurement of the elliptic anisotropy (v(2)) of the charm meson D-0 at midrapidity (broken vertical bar y broken vertical bar < 1) in Au + Au collisions at root S-NN = 200 GeV. The measurement was conducted by the STAR experiment at RHIC utilizing a new high- resolution silicon tracker. The measured D-0 v(2) in 0%-80% centrality Au + Au collisions can be described by a viscous hydrodynamic calculation for a transverse momentum (p(T)) of less than 4 GeV/c. The D-0 v(2) as a function of transverse kinetic energy (m(T) - m(0), where m(T) = root p(T)(2) + m(0)(2) p) is consistent with that of light mesons in 10%- 40% centrality Au + Au collisions. These results suggest that charm quarks have achieved local thermal equilibrium with the medium created in such collisions. Several theoretical models, with the temperature-dependent, dimensionless charm spatial diffusion coefficient (2 pi TDs) in the range of similar to 2-12, are able to simultaneously reproduce our D-0 v(2) result and our previously published results for the D-0 nuclear modification factor.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10304 - Nuclear physics

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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