ITA
ENG

Centrality dependence of kaon yields in Si + A and Au + Au collisions at relativistic energies - art. no. 044904

Authors

Ahle, L Akiba, Y Ashktorab, K Baker, M Beavis, D Beery, P Britt, HC Budick, B Chang, J Chasman, C Chen, Z Chi, CY Chu, YY Cianciolo, V Cole, BA Costales, JJ Crawford, HJ Cumming, JB Debbe, R Dunlop, JC Eldredge, W Engelage, J Fung, SY Gaardhoje, J Gonin, M Gushue, S Hamagaki, H Hansen, A Hansen, L Hansen, O Hayano, RS Hayashi, S Heintzelman, G Homma, S Judd, E Kaneko, H Kang, J Kaufman, S Kehoe, WL Kumagai, A Kurita, K Ledoux, RJ LeVine, MJ Luke, J Miake, Y Morrison, DP Morse, RJ Moskowitz, B Moulson, M Nagamiya, S Namboodiri, MN Nayak, TK Ogilvie, CA Olness, J Parsons, CG Remsberg, LP Roehrich, D Rothschild, P Sako, H Sakurai, H Sangster, TC Seto, R Shigaki, K Soltz, R Stankus, P Steadman, SG Stephans, GSF Sung, TW Tanaka, Y Tannenbaum, MJ Thomas, JH Tonse, SR Ueno-Hayashi, S van Dijk, JH Videbaek, F Vossnack, O Vutsadakis, V Wang, F Wang, Y Wegner, HE Woodruff, D Wu, Y Xu, GH Yagi, K Yang, X Zachary, D Zajc, WA Zhu, F Zhu, Q

Citation

L. Ahle et al., Centrality dependence of kaon yields in Si + A and Au + Au collisions at relativistic energies - art. no. 044904, PHYS REV C, 6004(4), 1999, pp. 4904

Citations number

Categorie Soggetti

Physics

Journal title

PHYSICAL REVIEW C-NUCLEAR PHYSICS

ISSN journal

05562813 → ACNP

Volume

6004

Issue

Year of publication

1999

Database

ISI

SICI code

0556-2813(199910)6004:4<4904:CDOKYI>2.0.ZU;2-5

Abstract

Charged kaon production has been measured in Si+Al and Si+Au collisions at 14.6A GeV/c, and Au+Au collisions at 11.1A GeV/c by Experiments 859 and 866 (the E-802 Collaboration) at the BNL AGS. Invariant transverse mass spectr a and rapidity distributions for both K+ and K- are presented. The centrali ty dependence of rapidity-integrated kaon yields is studied. Strangeness en hancement is observed as an increase in the slope of the kaon yield with th e total number of participants as well as the yield per participant. The en hancement starts with peripheral Si+Al and Si+Au collisions (relative to NN) and appears to saturate for a moderate number of participating nucleons in Si+Au collisions. It is also observed to increase slowly with centrality in Au+Au collisions, to a level in the most central Au+Au collisions that is greater than that found in central Si+A collisions. The enhancement fact ors for K+ production are 3.0+/-0.2(stat)+/-0.4(syst) and 4.0+/-0.3(stat)+/ -0.5(syst), respectively, for the most central 7% Si+Au collisions and the most central 4% Au+Au collisions relative to N+N at the corresponding beam energy. [S0556-2813(99)01910-X].