- vector meson elliptic flow () in Au + Au collisions at in STAR at RHIC

✍ Scribed by Prabhat R. Pujahari

• Publisher: Elsevier Science
• Year: 2011
• Tongue: English
• Weight: 160 KB
• Volume: 862-863
• Category: Article
• ISSN: 0375-9474
• DOI: 10.1016/j.nuclphysa.2011.05.083

✦ Synopsis

The first measurement of the ρ 0 -vector meson elliptic flow v 2 at mid-rapidity (|y| < 0.5) in 40 -80 % centrality in Au + Au collisions at √ s NN = 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 ∼ 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 NCQ = 2 scaling, supporting the coalescence being the dominant mechanism of hadronization in the intermediate p T region at RHIC.