Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Charged kaon and pion production at midrapidity in proton-nucleus and sulphur-nucleus collisions
Autore:
Boggild, H; Boissevain, J; Dodd, J; Esumi, S; Fabjan, CW; Fields, DE; Franz, A; Hansen, KH; Humanic, TJ; Jacak, BV; Kalechofsky, H; Lee, YY; Leltchouk, M; Lorstad, B; Maeda, N; Miyabayashi, A; Murray, M; Nishimura, S; Pandey, SU; Piuz, F; Polychronakos, V; Potekhin, M; Poulard, G; Sakaguchi, A; Sarabura, M; Simon-Gillo, J; Schmidt-Sorensen, J; Sondheim, W; Sugitate, T; Sullivan, JP; Sumi, Y; van Hecke, H; Willis, WJ; Wolf, K;
Indirizzi:
Niels Bohr Inst, DK-2100 Copenhagen, Denmark Niels Bohr Inst Copenhagen Denmark DK-2100 , DK-2100 Copenhagen, Denmark Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA Univ Calif Los Alamos Natl Lab Los Alamos NM USA 87545 amos, NM 87545 USA Columbia Univ, New York, NY 10027 USA Columbia Univ New York NY USA 10027Columbia Univ, New York, NY 10027 USA Hiroshima Univ, Higashihiroshima 739, Japan Hiroshima Univ Higashihiroshima Japan 739 v, Higashihiroshima 739, Japan CERN, CH-1211 Geneva 23, Switzerland CERN Geneva Switzerland 23CERN, CH-1211 Geneva 23, Switzerland Ohio State Univ, Columbus, OH 43210 USA Ohio State Univ Columbus OH USA 43210 State Univ, Columbus, OH 43210 USA SUNY Stony Brook, Stony Brook, NY 11794 USA SUNY Stony Brook Stony Brook NY USA 11794 rook, Stony Brook, NY 11794 USA Univ Pittsburgh, Pittsburgh, PA 15260 USA Univ Pittsburgh Pittsburgh PA USA 15260 tsburgh, Pittsburgh, PA 15260 USA Univ Lund, S-22362 Lund, Sweden Univ Lund Lund Sweden S-22362Univ Lund, S-22362 Lund, Sweden Texas A&M Univ, College Stn, TX 77843 USA Texas A&M Univ College Stn TX USA 77843 M Univ, College Stn, TX 77843 USA Brookhaven Natl Lab, Upton, NY 11973 USA Brookhaven Natl Lab Upton NY USA11973 aven Natl Lab, Upton, NY 11973 USA
Titolo Testata:
PHYSICAL REVIEW C-NUCLEAR PHYSICS
fascicolo: 1, volume: 59, anno: 1999,
pagine: 328 - 335
SICI:
0556-2813(199901)59:1<328:CKAPPA>2.0.ZU;2-J
Fonte:
ISI
Lingua:
ENG
Soggetto:
HEAVY-ION COLLISIONS; INTERSECTING STORAGE-RINGS; LARGE TRANSVERSE-MOMENTUM; QUARK-GLUON PLASMA; INCLUSIVE PRODUCTION; BARYON PRODUCTION; 200 GEV/C; HADRONS; DYNAMICS; SPECTRA;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
--discip_EC--
Citazioni:
30
Recensione:
Indirizzi per estratti:
Indirizzo: Boggild, H Niels Bohr Inst, Blegdamsvej 17, DK-2100 Copenhagen, Denmark Niels Bohr Inst Blegdamsvej 17 Copenhagen Denmark DK-2100 mark
Citazione:
H. Boggild et al., "Charged kaon and pion production at midrapidity in proton-nucleus and sulphur-nucleus collisions", PHYS REV C, 59(1), 1999, pp. 328-335

Abstract

The NA44 Collaboration has measured charged kaon and pion distributions atmidrapidity in sulphur and proton collisions with nuclear targets at 200 and 450 GeV/c per nucleon, respectively. The inverse slopes of kaons, are larger than those of pions. The difference in the inverse slopes of pions, kaons, and protons, all measured in our spectrometer, increases with system size and is consistent with the buildup of collective flow for larger systems. The target dependence of both the yields and inverse slopes is stronger for the sulphur beam, suggesting the increased importance of secondary rescattering for SA reactions. The rapidity density dN/dy of both K+ and K- increases more rapidly with system size than for pi(+) in a similar rapidity region. This trend continues with increasing centrality, and according to RQMD, it is caused by secondary reactions between mesons and baryons. The K-/K+ ratio falls with increasing system size but more slowly than the (p) over bar/p ratio. The pi(-)/pi(+) ratio is close to unity for all systems. From pBe to SPb the K+/p ratio decreases while K-/(p) over bar increases and root((K+.K-)/(p.(p) over bar)) stays constant. These data suggest that as larger nuclei collide, the resulting system has a larger transverse expansionand baryon density and an increasing fraction of strange quarks. [S0556-2813(99)02201-3].

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/12/20 alle ore 15:56:05