Szczegóły publikacji
Opis bibliograficzny
Measurement of $D^{0}$ azimuthal anisotropy at midrapidity in Au+Au collisions at $\sqrt{s_{NN}}$=200 GeV / L. ADAMCZYK, [et al.], Ł. FULEK, [et al.], M. PRZYBYCIEŃ, [et al.], R. SIKORA, [et al.] // Physical Review Letters ; ISSN 0031-9007. — 2017 — vol. 118 iss. 21, s. 212301-1–212301-7. — Bibliogr. s. 212301-7. — Publikacja dostępna online od: 2017-05-26
Autorzy (349)
Dane bibliometryczne
| ID BaDAP | 106975 |
|---|---|
| Data dodania do BaDAP | 2017-09-01 |
| Tekst źródłowy | URL |
| DOI | 10.1103/PhysRevLett.118.212301 |
| Rok publikacji | 2017 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | Physical Review Letters |
Abstract
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.
