$ρ^{0}$-vector meson elliptic flow ($v_{2}$) in $Au+Au$ collisions at $\sqrt{s_{NN}} = 200$ GeV in STAR at RHIC

Prabhat Pujahari

doi:10.1016/j.nuclphysa.2011.05.083

paper

$ρ^{0}$ -vector meson elliptic flow ( $v_{2}$ ) in $A u + A u$ collisions at $s_{N N} = 200$ GeV in STAR at RHIC

arXiv:1102.1286 · doi:10.1016/j.nuclphysa.2011.05.083

Abstract

The first measurement of the $ρ^{0}$ - vector meson elliptic flow $v_{2}$ at mid-rapidity ( $∣ y ∣$ $<$ 0.5) in $40 - 80$ centrality in $A u + A u$ collisions at $s_{N N} = 200$ GeV from the STAR experiment at RHIC is presented. The study is through the $π^{+} π^{-}$ hadronic decay channel of $ρ^{0}$ which has a branching ratio of $\sim$ 100 %. The analysis is being carried out in two different methods. The $v_{2}$ results obtained in these methods are consistent. Number of Constituent Quark (NCQ) scaling of $v_{2}$ of $ρ^{0}$ meson with respect to other hadrons at intermediate $p_{T}$ is observed. The $ρ^{0}$ $v_{2}$ favors $N C Q = 2$ scaling, supporting the coalescence being the dominant mechanism of hadronization in the intermediate $p_{T}$ region at RHIC.

4 pages, 6 figures, proceeding for the 6th International Conference on Physics and Astrophysics of Quark Gluon Plasma (ICPAQGP 2010)

ρ0-vector meson elliptic flow (v2​) in Au+Au collisions at sNN​​=200 GeV in STAR at RHIC

Abstract

References in corpus (5)

$ρ^{0}$ -vector meson elliptic flow ( $v_{2}$ ) in $A u + A u$ collisions at $s_{N N} = 200$ GeV in STAR at RHIC