Azimuthal anisotropy of K⁰_s and Λ + Λ¯¯¯ production at mid-rapidity from Au+Au collisions at √(^sNN) = 130 GeV.

Journal Article · Sun Sep 01 00:00:00 EDT 2002 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.89.132301· OSTI ID:949671

Adler, C. ^[1]; Ahammed, Z. ^[2]; Allgower, C. ^[3]; Amonett, J. ^[4]; Anderson, B. D. ^[4]; Cadman, R. V. ^[5]; Krueger, K. ^[5]; Spinka, H. M. ^[5]; Underwood, D. G. ^[5]; Hallman, Timothy J. ^[6]

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1. Univ. of Frankfurt, Frankfurt (Germany)
2. Purdue Univ., West Lafayette, IN (United States)
3. Indiana Univ., Bloomington, IN (United States)
4. Kent State Univ., Kent, OH (United States)
5. Argonne National Lab. (ANL), Argonne, IL (United States)
6. Brookhaven National Lab. (BNL), Upton, NY (United States)

We report STAR results on the azimuthal anisotropy parameter v₂ for strange particles K⁰_s, Λ, and Λ⁻ at midrapidity in Au+Au collisions at √(^sNN)=130 GeV at the Relativistic Heavy Ion Collider. The value of v₂ as a function of transverse momentum, p_t, of the produced particle and collision centrality is presented for both particles up to p_t~3.0 GeV/c. A strong p_t dependence in v₂ is observed up to 2.0 GeV/c. The v₂ measurement is compared with hydrodynamic model calculations. The physics implications of the p_t integrated v₂ magnitude as a function of particle mass are also discussed.

• Research Organization: Argonne National Lab. (ANL), Argonne, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC); National Science Foundation (NSF); FOR
• DOE Contract Number: DE-AC02-06CH11357
• OSTI ID: 949671
• Report Number(s): ANL-HEP-PR-02-34; PRLTAO; TRN: US1003613
• Journal Information: Physical Review Letters, Vol. 89, Issue Sep. 23, 2002; ISSN 0031-9007
• Publisher: American Physical Society (APS)
• Country of Publication: United States
• Language: ENGLISH

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
74 ATOMIC AND MOLECULAR PHYSICS
ANISOTROPY
HEAVY IONS
HYDRODYNAMIC MODEL
PHYSICS
PRODUCTION
STRANGE PARTICLES
TRANSVERSE MOMENTUM