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Titolo:
Xi and (Xi)over-bar production in 158 GeV/nucleon Pb+Pb collisions
Autore:
Appelhauser, H; Bachler, J; Bailey, SJ; Barna, D; Barnby, LS; Bartke, J; Barton, RA; Bialkowska, H; Billmeier, A; Blyth, CO; Bock, R; Bormann, C; Brady, FP; Brockmann, R; Brun, R; Buncic, P; Caines, HL; Carr, LD; Cebra, D; Cooper, GE; Cramer, JG; Cristinziani, M; Csato, P; Dunn, J; Eckardt, V; Eckhardt, F; Ferguson, MI; Fischer, HG; Flierl, D; Fodor, Z; Foka, P; Freund, P; Friese, V; Fuchs, M; Gabler, F; Ganz, R; Geist, W; Gal, J; Gazdzicki, M; Gladysz, E; Grebieszkow, J; Gunther, J; Harris, JW; Hegyi, S; Henkel, T; Hill, LA; Hummler, H; Igo, G; Irmscher, D; Jacobs, P; Jones, PG; Kadija, K; Kolesnikov, VI; Konashenok, A; Kowalski, M; Lasiuk, B; Levai, P; Liu, F; Malakhov, AI; Margetis, S; Markert, C; Melkumov, GL; Mock, A; Molnar, J; Nelson, JM; Oldenburg, M; Odyniec, G; Palla, G; Panagiotou, AD; Petridis, A; Piper, A; Porter, RJ; Poskanzer, AM; Prindle, DJ; Puhlhofer, F; Rauch, W; Reid, JG; Renfordt, R; Retyk, W; Ritter, HG; Rohrich, D; Roland, C; Roland, G; Rudolph, H; Rybicki, A; Sandoval, A; Sann, H; Semenov, AY; Schafer, E; Schmischke, D; Schmitz, N; Schonfelder, S; Seyboth, P; Seyerlein, J; Sikler, F; Skrzypczak, E; Snellings, R; Squier, GTA; Stock, R; Strobele, H; Struck, C; Susa, T; Szentpetery, I; Sziklai, J; Toy, M; Trainor, TA; Trentalange, S; Ullrich, T; Vassiliou, M; Veres, G; Vesztergombi, G; Vranic, D; Wang, F; Weerasundara, DD; Wenig, S; Whitten, C; Wienold, T; Wood, L; Xu, N; Yates, TA; Zimanyi, J; Zhu, XZ; Zybert, R;
Indirizzi:
Univ Athens, Dept Phys, GR-10679 Athens, Greece Univ Athens Athens Greece GR-10679 s, Dept Phys, GR-10679 Athens, Greece Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA Univ Calif Berkeley Berkeley CA USA 94720 ley Lab, Berkeley, CA 94720 USA Univ Birmingham, Birmingham B15 2TT, W Midlands, England Univ Birmingham Birmingham W Midlands England B15 2TT W Midlands, England KFKI, Res Inst Particle & Nucl Phys, Budapest, Hungary KFKI Budapest Hungary Res Inst Particle & Nucl Phys, Budapest, Hungary CERN, Geneva, Switzerland CERN Geneva SwitzerlandCERN, Geneva, Switzerland Inst Phys Nucl, Krakow, Poland Inst Phys Nucl Krakow PolandInst Phys Nucl, Krakow, Poland Gesell Schwerionenforsch Inst Darmstadt, Darmstadt, Germany Gesell Schwerionenforsch Inst Darmstadt Darmstadt Germany tadt, Germany Univ Calif Davis, Davis, CA 95616 USA Univ Calif Davis Davis CA USA 95616Univ Calif Davis, Davis, CA 95616 USA Joint Inst Nucl Res, Dubna, Russia Joint Inst Nucl Res Dubna RussiaJoint Inst Nucl Res, Dubna, Russia Univ Frankfurt, Fachbereich Phys, Frankfurt, Germany Univ Frankfurt Frankfurt Germany , Fachbereich Phys, Frankfurt, Germany Kent State Univ, Kent, OH 44242 USA Kent State Univ Kent OH USA 44242Kent State Univ, Kent, OH 44242 USA Univ Calif Los Angeles, Los Angeles, CA 90095 USA Univ Calif Los Angeles Los Angeles CA USA 90095 Los Angeles, CA 90095 USA Univ Marburg, Fachbereich Phys, Marburg, Germany Univ Marburg Marburg Germany arburg, Fachbereich Phys, Marburg, Germany Max Planck Inst Phys, D-80805 Munich, Germany Max Planck Inst Phys Munich Germany D-80805 hys, D-80805 Munich, Germany Inst Nucl Studies, PL-00681 Warsaw, Poland Inst Nucl Studies Warsaw Poland PL-00681 tudies, PL-00681 Warsaw, Poland Univ Warsaw, Inst Phys Expt, PL-00325 Warsaw, Poland Univ Warsaw Warsaw Poland PL-00325 st Phys Expt, PL-00325 Warsaw, Poland Univ Washington, Phys Nucl Lab, Seattle, WA 98195 USA Univ Washington Seattle WA USA 98195 Phys Nucl Lab, Seattle, WA 98195 USA Yale Univ, New Haven, CT 06520 USA Yale Univ New Haven CT USA 06520Yale Univ, New Haven, CT 06520 USA Rudjer Boskovic Inst, Zagreb, Croatia Rudjer Boskovic Inst Zagreb Croatia djer Boskovic Inst, Zagreb, Croatia
Titolo Testata:
PHYSICS LETTERS B
fascicolo: 3-4, volume: 444, anno: 1998,
pagine: 523 - 530
SICI:
0370-2693(199812)444:3-4<523:XA(PI1>2.0.ZU;2-G
Fonte:
ISI
Lingua:
ENG
Soggetto:
HEAVY-ION COLLISIONS; QUARK-GLUON PLASMA; STRANGENESS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
30
Recensione:
Indirizzi per estratti:
Indirizzo: Appelhauser, H Univ Heidelberg, Inst Phys, Heidelberg, Germany Univ Heidelberg Heidelberg Germany , Heidelberg, Germany
Citazione:
H. Appelhauser et al., "Xi and (Xi)over-bar production in 158 GeV/nucleon Pb+Pb collisions", PHYS LETT B, 444(3-4), 1998, pp. 523-530

Abstract

We report measurements of Xi(-) and (Xi)over-bar(+) hyperon absolute yields as a function of rapidity in 158 GeV/c Ph + Pb collisions. At midrapidity, dN/dy = 2.29 +/- 0 12 for Xi(-), and 0.52 +/- 0.05 for (Xi)over-bar(+), leading to the ratio of (Xi)over-bar(+)/Xi(-) = 0.23 +/- 0.03. Inverse slopeparameters fitted to the measured transverse mass spectra are of the orderof T approximate to 300 MeV near mid-rapidity. The estimated total yield of Xi(-) particles in Pb+ Pb central interactions amounts to 7.4 +/- 1.0 percollision. Comparison to Xi(-) production in properly scaled p + p reactions at the same energy reveals a dramatic enhancement (about one order of magnitude) of Xi(-) production in Pb + Pb central collisions over elementary hadron interactions. (C) 1998 Elsevier Science B.V. All rights reserved.

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Documento generato il 18/01/21 alle ore 16:24:18