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:807430

Adler, C.; Ahammed, Z.; Allgower, C.; Amonett, J.; Anderson, B. D.; Anderson, M.; Averichev, G. S.; Balewski, J.; Barannikova, O.; Barnby, L. S.; Baudot, J.; Bekele, S.; Belaga, V. V.; Bellwied, R.; Berger, J.; Bichsel, H.; Billmeier, A.; Bland, L. C.; Blyth, C. O.; Bonner, B. E. ; Boucham, A.; Brandin, A.; Bravar, A.; Cadman, R. V.; Caines, H.; Cardenas, A.; Carroll, J.; Castillo, J.; Castro, M.; Cebra, D.; Chaloupka, P.; Chattopadhyay, S.; Chen, Y.; Chernenko, S. P.; Cherney, M.; Chikanian, A.; Choi, B.; Christie, W.; Coffin, J. P.; Cormier, T. M.; Cramer, J. G.; Crawford, H. J.; Deng, W. S.; Derevschikov, A. A.; Didenko, L.; Dietel, T.; Draper, J. E.; Dunin, V. B.; Dunlop, J. C.; Eckardt, V.; Efimov, L. G.; Emelianov, V.; Engelage, J.; Eppley, G.; Erazmus, B.; Fachini, P.; Faine, V.; Faivre, J.; Filimonov, K.; Finch, E.; Fisyak, Y.; Flierl, D.; Foley, K. J.; Fu, J.; Gagliardi, C. A.; Gagunashvili, N.; Gans, J.; Gaudichet, L.; Germain, M.; Geurts, F.; Ghazikhanian, V.; Grachov, O.; Grigoriev, V.; Guedon, M.; Gushin, E.; Hallman, Timothy J.; Hardtke, D.; Harris, J. W.; Henry, T. W.; Heppelmann, S.; Herston, T.; Hippolyte, B.; Hirsch, A.; Hjort, E.; Hoffmann, G. W.; Horsley, M.; Huang, H. Z.; Humanic, T. J.; Igo, G. J.; Ishihara, A.; Ivanshin, Yu I.; Jacobs, P.; Jacobs, W. W.; Janik, M.; Johnson, I.; Jones, P. G.; Judd, E. G.; Kaneta, M.; Kaplan, M.; Keane, D.; Kiryluk, J.; Kisiel, A.; Klay, J.; Klein, S. R.; Klyachko, A.; Konstantinov, A. S.; Kopytine, M.; Kotchenda, L.; Kovalenko, A. D.; Kramer, M.; Kravtsov, P.; Krueger, K.; Kuhn, C.; Kulikov, A. I.; Kunde, G. J.; Kunz, C. L.; Kutuev, R. Kh.; Kuznetsov, A. A.; Lakehal-Ayat, L.; Lamont, M. A.C.; Landgraf, J. M.; Lange, S.; Lansdell, C. P.; Lasiuk, B.; Laue, F.; Lauret, J.; Lebedev, A.; Lednicky, R.; Leontiev, V. M.; LeVine, M. J.; Li, Q. ^[1]; Lindenbaum, S. J.; Lisa, M. A.; Liu, F.; Liu, L..; Liu, Z.; Liu, Q. J.; Ljubicic, T.; Llope, W. J.; LoCurto, G.; Long, H.; Longacre, R. S.

---

1. Wayne State U.

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: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
• Sponsoring Organization: USDOE Director, Office of Science. Office of High Energy and Nuclear Physics. Division of Nuclear Physics (US)
• Contributing Organization: STAR Collaboration
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 807430
• Report Number(s): LBNL-51722; PRLTAO; R&D Project: NRNC; B& R KB0201022; TRN: US0301832
• Journal Information: Physical Review Letters, Vol. 89, Issue 13; Other Information: Journal Publication Date: Sep. 23, 2002; PBD: 13 May 2002; ISSN 0031-9007
• Publisher: American Physical Society (APS)
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ANISOTROPY
PRODUCTION
LAWRENCE BERKELEY LABORATORY