Campus Units

Physics and Astronomy

Document Type

Article

Publication Date

7-2007

Journal or Book Title

Physical Review Letters

Volume

99

Issue

5

First Page

052301

DOI

10.1103/PhysRevLett.99.052301

Abstract

Differential elliptic flow (v(2)) for phi mesons and (anti)deuterons ((d) over bar )d is measured for Au + Au collisions at root 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) over 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.

Comments

This article is published as Afanasiev, S., C. Aidala, N. N. Ajitanand, Y. Akiba, J. Alexander, A. Al-Jamel, K. Aoki et al. "Elliptic Flow for ϕ Mesons and (Anti) deuterons in Au+ Au Collisions at s N N= 200 GeV." Physical review letters 99, no. 5 (2007): 052301. DOI:10.1103/PhysRevLett.99.052301. Posted with permission.

Copyright Owner

American Physical Society

Language

en

File Format

application/pdf

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