Charged and strange hadron elliptic flow in Cu+Cu collisions at $\sqrt{s_{NN}}$ = 62.4 and 200 GeV - IN2P3 - Institut national de physique nucléaire et de physique des particules
Article Dans Une Revue Physical Review C Année : 2010

Charged and strange hadron elliptic flow in Cu+Cu collisions at $\sqrt{s_{NN}}$ = 62.4 and 200 GeV

B.I. Abelev
  • Fonction : Auteur
B. Erazmus
  • Fonction : Auteur
  • PersonId : 1178907
  • IdRef : 033726485
Magali Estienne
C. Roy

Résumé

We present the results of an elliptic flow analysis of Cu+Cu collisions recorded with the STAR detector at 62.4 and 200GeV. Elliptic flow as a function of transverse momentum is reported for different collision centralities for charged hadrons and strangeness containing hadrons $K_{S}^{0}$, $\Lambda$, $\Xi$, $\phi$ in the midrapidity region $|eta|<1.0$. Significant reduction in systematic uncertainty of the measurement due to non-flow effects has been achieved by correlating particles at midrapidity, $|\eta|<1.0$, with those at forward rapidity, $2.5<|\eta|<4.0$. We also present azimuthal correlations in p+p collisions at 200 GeV to help estimating non-flow effects. To study the system-size dependence of elliptic flow, we present a detailed comparison with previously published results from Au+Au collisions at 200 GeV. We observe that $v_{2}$($p_{T}$) of strange hadrons has similar scaling properties as were first observed in Au+Au collisions, i.e.: (i) at low transverse momenta, $p_T<2GeV/c$, $v_{2}$ scales with transverse kinetic energy, $m_{T}-m$, and (ii) at intermediate $p_T$, $2

Dates et versions

in2p3-00668924 , version 1 (10-02-2012)

Identifiants

Citer

B.I. Abelev, B. Erazmus, Magali Estienne, A. Geromitsos, S. Kabana, et al.. Charged and strange hadron elliptic flow in Cu+Cu collisions at $\sqrt{s_{NN}}$ = 62.4 and 200 GeV. Physical Review C, 2010, 81, pp.044902. ⟨10.1103/PhysRevC.81.044902⟩. ⟨in2p3-00668924⟩
30 Consultations
0 Téléchargements

Altmetric

Partager

More