Azimuthal anisotropy of K(0)(S) and Lambda+Lambda production at midrapidity from Au+Au collisions at sqrt[s(NN)]=130 GeV

We report STAR results on the azimuthal anisotropy parameter v(2) for strange particles K(0)(S), Lambda, and Lambda at midrapidity in Au+Au collisions at sqrt[s(NN)]=130 GeV at the Relativistic Heavy Ion Collider. The value of v(2) as a function of transverse momentum, p(t), of the produced particle...

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Published in:Physical review letters 2002-09, Vol.89 (13), p.132301-132301
Main Authors: 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, Calderón de la Barca Sánchez, M, 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, 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, T 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, 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
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Language:English
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Summary:We report STAR results on the azimuthal anisotropy parameter v(2) for strange particles K(0)(S), Lambda, and Lambda at midrapidity in Au+Au collisions at sqrt[s(NN)]=130 GeV at the Relativistic Heavy Ion Collider. The value of v(2) as a function of transverse momentum, p(t), of the produced particle and collision centrality is presented for both particles up to p(t) approximately 3.0 GeV/c. A strong p(t) dependence in v(2) is observed up to 2.0 GeV/c. The v(2) measurement is compared with hydrodynamic model calculations. The physics implications of the p(t) integrated v(2) magnitude as a function of particle mass are also discussed.
ISSN:0031-9007