Azimuthal anisotropy of pi(0) and eta mesons in Au plus Au collisions at root s(NN)=200 GeV

0436904 - FZÚ 2015 RIV US eng J - Článek v odborném periodiku
Adare, A. - Afanasiev, S. - Aidala, C. - Tomášek, Lukáš - Vrba, Václav … celkem 384 autorů
Azimuthal anisotropy of pi(0) and eta mesons in Au plus Au collisions at root s(NN)=200 GeV.
Physical Review. C. Roč. 88, č. 6 (2013), "064910-1"-"064910-10". ISSN 0556-2813
Institucionální podpora: RVO:68378271
Klíčová slova: quark-gluon plasma * pb collisions * flow * collaboration * perspective * momentum
Kód oboru RIV: BF - Elementární částice a fyzika vys. energií
Impakt faktor: 3.881, rok: 2013

The azimuthal anisotropy coefficients v2 and v4 of p 0 and. mesons are measured in Au + Au collisions at root s(NN) = 200 GeV as a function of transverse momentum p(T) (1-14 GeV/c) and centrality. The extracted v(2) coefficients are found to be consistent between the two meson species over the measured p(T) range. The ratio of v(4)/v(2)(2) for pi(0) mesons is found to be independent of p(T) for 1- 9 GeV/c, implying a lack of sensitivity of the ratio to the change of underlying physics with p(T). Furthermore, the ratio of v(4)/v(2)(2) is systematically larger in central collisions, which may reflect the combined effects of fluctuations in the initial collision geometry and finite viscosity in the evolving medium.
Trvalý link: http://hdl.handle.net/11104/0240527