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Titolo:
Two-proton correlations near midrapidity in p+Pb and S+Pb collisions at the CERN SPS
Autore:
Boggild, H; Boissevain, J; Conin, L; Dodd, J; Erazmus, B; Esumi, S; Fabjan, CW; Fields, DE; Franz, A; Hansen, KH; Holzer, EB; Humanic, TJ; Jacak, BV; Jayanti, R; Kalechofsky, H; Lee, YY; Leltchouk, M; Lorstad, B; Maeda, N; Martin, L; Medvedev, A; Miyabayashi, A; Murray, M; Nishimura, S; Paic, G; Pandey, SU; Piuz, F; Pluta, J; Polychronakos, V; Potekhin, M; Poulard, G; Sakaguchi, A; Sarabura, M; Schmidt-Sorensen, J; Spegel, M; Simon-Gillo, J; Sondheim, W; Sugitate, T; Sullivan, JP; Sumi, Y; van Hecke, H; Willis, WJ; Wolf, K; Xu, N;
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 SUBATECH, F-44070 Nantes, France SUBATECH Nantes France F-44070SUBATECH, F-44070 Nantes, France Columbia Univ, New York, NY 10027 USA Columbia Univ New York NY USA 10027Columbia Univ, New York, NY 10027 USA Hiroshima Univ, Higashihiroshima 724, Japan Hiroshima Univ Higashihiroshima Japan 724 v, Higashihiroshima 724, 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 Warsaw Univ Technol, PL-00662 Warsaw, Poland Warsaw Univ Technol Warsaw Poland PL-00662 hnol, PL-00662 Warsaw, Poland
Titolo Testata:
PHYSICS LETTERS B
fascicolo: 2-3, volume: 458, anno: 1999,
pagine: 181 - 189
SICI:
0370-2693(19990708)458:2-3<181:TCNMIP>2.0.ZU;2-A
Fonte:
ISI
Lingua:
ENG
Soggetto:
HEAVY-ION COLLISIONS; NUCLEAR COLLISIONS; ULTRARELATIVISTIC ENERGIES; 2-PARTICLE CORRELATIONS; INTERFEROMETRY; DEPENDENCE; DISTRIBUTIONS; AU-197; GEV/C;
Keywords:
two-proton correlations; proton-nucleus; nucleus-nucleus; heavy-ion collisions; proton source size; CERN SPS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
28
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., "Two-proton correlations near midrapidity in p+Pb and S+Pb collisions at the CERN SPS", PHYS LETT B, 458(2-3), 1999, pp. 181-189

Abstract

Correlations of two protons emitted near midrapidity in p + Pb collisions at 450 GeV/c and S + Pb collisions at 200 A GeV/c are presented, as measured by the NA44 Experiment. The correlation effect, which arises as a result of final state interactions and Fermi-Dirac statistics, is related to the space-time characteristics of proton emission. The measured source sizes aresmaller than the size of the target lead nucleus but larger than the sizesof the projectiles. A dependence on the collision centrality is observed; the source size increases with decreasing impact parameter. Proton source sizes near midrapidity appear to be smaller than those of pions in the same interactions. Quantitative agreement with the results of RQMD (v1.08) simulations is found for p + Pb collisions. For S + Pb collisions the measured correlation effect is somewhat weaker than that predicted by the model simulations, implying either a larger source size or larger contribution of protons from long-lived particle decays. (C) 1999 Published by Elsevier ScienceB.V. All rights reserved.

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