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Titolo:
Space-time evolution of the hadronic source in peripheral to central Pb plus Pb collisions
Autore:
Bearden, IG; Boggild, H; Boissevain, J; Christiansen, PHL; Conin, L; Dodd, J; Erazmus, B; Esumi, S; Fabjan, CW; Ferenc, D; Franz, A; Gaardhoje, JJ; Hansen, AG; Hansen, O; Hardtke, D; van Hecke, H; Holzer, EB; Humanic, TJ; Hummel, P; Jacak, BV; Kaimi, K; Kaneta, M; Kohama, T; Kopytine, M; Leltchouk, M; Ljubicic, A; Lorstad, B; Maeda, N; Martin, L; Medvedev, A; Murray, M; Ohnishi, H; Paic, G; Pandey, SU; Piuz, F; Pluta, J; Polychronakos, V; Potekhin, M; Poulard, G; Reichhold, D; Sakaguchi, A; Schmidt-Sorensen, J; Simon-Gillo, J; Sondheim, W; Sugitate, T; Sullivan, JP; Sumi, Y; Willis, WJ; Wolf, K; Xu, N; Zachary, DS;
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, Dept Phys, New York, NY 10027 USA Columbia Univ New York NY USA 10027 iv, Dept Phys, New York, NY 10027 USA Nucl Phys Lab Nantes, F-44072 Nantes, France Nucl Phys Lab Nantes NantesFrance F-44072 antes, F-44072 Nantes, France Hiroshima Univ, Higashihiroshima 7398526, Japan Hiroshima Univ Higashihiroshima Japan 7398526 hihiroshima 7398526, Japan CERN, CH-1211 Geneva 23, Switzerland CERN Geneva Switzerland 23CERN, CH-1211 Geneva 23, Switzerland Rudjer Boskovic Inst, Zagreb, Croatia Rudjer Boskovic Inst Zagreb Croatia djer Boskovic Inst, Zagreb, Croatia Texas A&M Univ, Inst Cyclotron, College Stn, TX 77843 USA Texas A&M Univ College Stn TX USA 77843 lotron, College Stn, TX 77843 USA Ohio State Univ, Dept Phys, Columbus, OH 43210 USA Ohio State Univ Columbus OH USA 43210 , Dept Phys, Columbus, OH 43210 USA SUNY Stony Brook, Stony Brook, NY 11973 USA SUNY Stony Brook Stony Brook NY USA 11973 rook, Stony Brook, NY 11973 USA Univ Lund, Dept Phys, S-22362 Lund, Sweden Univ Lund Lund Sweden S-22362Univ Lund, Dept Phys, S-22362 Lund, Sweden Brookhaven Natl Lab, Upton, NY 11973 USA Brookhaven Natl Lab Upton NY USA11973 aven Natl Lab, Upton, NY 11973 USA
Titolo Testata:
EUROPEAN PHYSICAL JOURNAL C
fascicolo: 2, volume: 18, anno: 2000,
pagine: 317 - 325
SICI:
1434-6044(200012)18:2<317:SEOTHS>2.0.ZU;2-J
Fonte:
ISI
Lingua:
ENG
Soggetto:
HEAVY-ION COLLISIONS; IMAGING CHERENKOV DETECTOR; QUARK-GLUON PLASMA; PION INTERFEROMETRY; PB+PB COLLISIONS; CERN-SPS; STRANGENESS; PARTICLE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
26
Recensione:
Indirizzi per estratti:
Indirizzo: Sakaguchi, A Niels Bohr Inst, Blegdamsvej 17, DK-2100 Copenhagen, Denmark Niels Bohr Inst Blegdamsvej 17 Copenhagen Denmark DK-2100 rk
Citazione:
I.G. Bearden et al., "Space-time evolution of the hadronic source in peripheral to central Pb plus Pb collisions", EUR PHY J C, 18(2), 2000, pp. 317-325

Abstract

Two-particle correlations of negative pions as a function of charged particle multiplicity are studied in Pb+Pb collisions at roots = 17.3GeV per nucleon using the NA44 experiment at the CERN Super Proton Synchrotron(SPS). We find that the source size parameters increase with the charged particle multiplicity. However the slope of the: source size parameters plotted as a function of charged multiplicity is slightly larger at high multiplicity than at low multiplicity. The value of lambda is independent of charged multiplicity. For Pb+Pb collisions, R-L is larger than R-TS and R-TO for all multiplicity intervals, whereas these three radius parameters were approximately equal in S+Nucleus collisions. The ratios (R-L/R-TS) and (R-L/R-TO) for Pb+Pb data show almost no dependence on charged multiplicity. The duration of pion emission Delta tau is constant at 3.8+/-1.1 fm/c as a function of the charged multiplicity in Pb+Pb collisions. Effective volume (V) is also calculated as V=pi x R-TS(2) x R-L; assuming a cylindrically shaped source. We found, within the limited statistics, the effective Volume rapidly increases at high multiplicity.

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Documento generato il 05/12/20 alle ore 16:19:45