# Elliptic flow for $\phi$ mesons and (anti)deuterons in Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV

Abstract : Differential elliptic flow (v_2) for phi mesons and (anti)deuterons (d^bar)d is measured for Au+Au collisions at sqrt(s_NN) = 200 GeV. The v_2 for phi mesons follows the trend of lighter pi^+/- and K^+/- mesons, suggesting that ordinary hadrons interacting with standard hadronic cross sections are not the primary driver for elliptic flow development. The v_2 values for (d^bar)d suggest that elliptic flow is additive for composite particles. This further validation of the universal scaling of v_2 per constituent quark for baryons and mesons suggests that partonic collectivity dominates the transverse expansion dynamics.
Document type :
Journal articles

http://hal.in2p3.fr/in2p3-00141927
Contributor : Jeanine Pellet <>
Submitted on : Monday, April 16, 2007 - 6:06:52 PM
Last modification on : Tuesday, April 20, 2021 - 12:00:10 PM

### Citation

S. Afanasiev, C. Aidala, N.N. Ajitanand, Y. Akiba, J. Alexander, et al.. Elliptic flow for $\phi$ mesons and (anti)deuterons in Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV. Physical Review Letters, American Physical Society, 2007, 99, pp.052301. ⟨10.1103/PhysRevLett.99.052301⟩. ⟨in2p3-00141927⟩

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