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Titolo:
An excitation function of K- and K+ production in Au plus Au reactions at the AGS
Autore:
Ahle, L; Akiba, Y; Ashktorab, K; Baker, MD; Beavis, D; Budick, B; Chang, J; Chasman, C; Chen, Z; Chu, YY; Chujo, T; Cumming, J; Debbe, R; Dunlop, JC; Eldredge, W; Fleming, K; Fung, SY; Garcia, E; Gushue, S; Hamagaki, H; Hayano, R; Heintzelman, GH; Kang, JH; Kim, EJ; Kumagai, A; Kurita, K; Lee, JH; Lee, YK; Miake, Y; Mignerey, AC; Moulson, M; Muentz, C; Nagano, K; Ogilvie, CA; Olness, J; Oyama, K; Remsberg, L; Sako, H; Seto, R; Shea, J; Shigaki, K; Steadman, SG; Stephans, GSF; Tamagawa, T; Tannenbaum, MJ; Ueno-Hayashi, S; Videbaek, F; Xiang, H; Wang, F; Yagi, K; Zhu, F; Back, BB; Betts, RR; Chang, J; Chang, WC; Chi, CY; Chu, YY; Cumming, JB; Dunlop, JC; Eldredge, W; Fung, SY; Ganz, R; Garcia, E; Gillitzer, A; Heintzelman, GH; Henning, WF; Hofman, DJ; Holzman, B; Kang, JH; Kim, EJ; Kim, SY; Kwon, Y; McLeod, D; Mignerey, AC; Moulson, M; Nanal, V; Ogilvie, CA; Pak, R; Ruangma, A; Russ, D; Seto, R; Stanskas, PJ; Stephans, GSF; Wang, H; Wolfs, FLH; Wuosmaa, AH; Xiang, H; Xu, GH; Yao, HB; Zou, CM;
Indirizzi:
MIT, Cambridge, MA 02139 USA MIT Cambridge MA USA 02139MIT, Cambridge, MA 02139 USA NYU, New York, NY USA NYU New York NY USANYU, New York, NY USA Univ Rochester, Rochester, NY 14627 USA Univ Rochester Rochester NY USA 14627 Rochester, Rochester, NY 14627 USA Argonne Natl Lab, Argonne, IL 60439 USA Argonne Natl Lab Argonne IL USA 60439 nne Natl Lab, Argonne, IL 60439 USA Brookhaven Natl Lab, Upton, NY 11973 USA Brookhaven Natl Lab Upton NY USA11973 aven Natl Lab, Upton, NY 11973 USA Univ Calif Riverside, Riverside, CA 92521 USA Univ Calif Riverside Riverside CA USA 92521 side, Riverside, CA 92521 USA Columbia Univ, Nevis Labs, Irvington, NY 10533 USA Columbia Univ Irvington NY USA 10533 Nevis Labs, Irvington, NY 10533 USA Univ Illinois, Chicago, IL 60607 USA Univ Illinois Chicago IL USA 60607Univ Illinois, Chicago, IL 60607 USA High Energy Accelerator Res Org KEK, Tanashi, Tokyo 188, Japan High EnergyAccelerator Res Org KEK Tanashi Tokyo Japan 188 yo 188, Japan Johns Hopkins Univ, Baltimore, MD USA Johns Hopkins Univ Baltimore MD USA ohns Hopkins Univ, Baltimore, MD USA Univ Maryland, College Pk, MD 20742 USA Univ Maryland College Pk MD USA 20742 Maryland, College Pk, MD 20742 USA High Energy Accelerator Res Org KEK, Tsukuba, Ibaraki 305, Japan High Energy Accelerator Res Org KEK Tsukuba Ibaraki Japan 305 305, Japan Univ Tokyo, Dept Phys, Tokyo 113, Japan Univ Tokyo Tokyo Japan 113Univ Tokyo, Dept Phys, Tokyo 113, Japan Univ Tokyo, Sch Sci, Ctr Nucl Study, Tanashi, Tokyo 188, Japan Univ TokyoTanashi Tokyo Japan 188 Nucl Study, Tanashi, Tokyo 188, Japan Univ Tsukuba, Tsukuba, Ibaraki 305, Japan Univ Tsukuba Tsukuba Ibaraki Japan 305 ukuba, Tsukuba, Ibaraki 305, Japan Yonsei Univ, Seoul 120749, South Korea Yonsei Univ Seoul South Korea 120749 sei Univ, Seoul 120749, South Korea
Titolo Testata:
PHYSICS LETTERS B
fascicolo: 1-2, volume: 490, anno: 2000,
pagine: 53 - 60
SICI:
0370-2693(20000928)490:1-2<53:AEFOKA>2.0.ZU;2-8
Fonte:
ISI
Lingua:
ENG
Soggetto:
HEAVY-ION COLLISIONS; NUCLEUS-NUCLEUS COLLISIONS; SUBTHRESHOLD ANTIKAON PRODUCTION; AU+AU COLLISIONS; KAON PRODUCTION; BEAM ENERGIES; 11.6A GEV/C; MATTER; DISTRIBUTIONS; MULTIPLICITY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
31
Recensione:
Indirizzi per estratti:
Indirizzo: Ogilvie, CA MIT, 77 Massachusetts Ave, Cambridge, MA 02139 USA MIT 77 Massachusetts Ave Cambridge MA USA 02139 , MA 02139 USA
Citazione:
L. Ahle et al., "An excitation function of K- and K+ production in Au plus Au reactions at the AGS", PHYS LETT B, 490(1-2), 2000, pp. 53-60

Abstract

Mid-rapidity spectra and yields of K- and K+ have been measured for Au + Au collisions at 4, 6, 8, and 10.7 AGeV. The K- yield increases faster with beam energy than for K+ and hence the K-/K+ ratio increases with beam energy. This ratio is studied as a function of both root s and root s - root s(th) which allows the direct comparison of the kaon yields with respect to the production threshold in p + p reactions. For equal root s - root s(th) the measured ratio K-/K+ = 0.2 at energies above threshold in contrast to theK-/K+ ratio of near unity observed at energies below threshold. The use ofthe K-=/K* ratio to test the predicted changes of kaon properties in densenuclear matter is discussed. (C) 2000 Elsevier Science B.V. All rights reserved.

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Documento generato il 08/04/20 alle ore 11:42:54