Anomalous multiplicity fluctuations from phase transitions in heavy-ion collisions

被引：73

作者：

Heiselberg, H

Jackson, AD

机构：

[1] NORDITA, DK-2100 Copenhagen O, Denmark

[2] Niels Bohr Inst, DK-2100 Copenhagen O, Denmark

来源：

PHYSICAL REVIEW C | 2001年 / 63卷 / 06期

关键词：

D O I：

10.1103/PhysRevC.63.064904

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

Event-by-event fluctuations and correlations between particles produced in relativistic nuclear collisions are studied. The fluctuations in positive, negative, total, and net charge are closely related through correlations. In the event of a phase transition to a quark-gluon plasma, fluctuations in total and net charge can be enhanced and reduced, respectively, which, however, is very sensitive to the acceptance and centrality. If the colliding system experiences strong density fluctuations due, e.g., to droplet formation in a first-order phase transition. all fluctuations can be enhanced substantially. The importance of fluctuations and correlations is exemplified by event-by-event measurement of the multiplicities of J/Psi 's and charged particles since these observables should anticorrelate in the presence of comover or anomalous absorption.

引用

页数：5

共 20 条

[1]

AFANASIEV SV, HEPEX0009053

[2] Event-by-event fluctuations of average transverse momentum in central Pb plus Pb collisions at 158 GeV per nucleon [J].

Appelshäuser, H ;

Bächler, J ;

Bailey, SJ ;

Barna, D ;

Barnby, LS ;

Bartke, J ;

Barton, RA ;

Betev, L ;

Bialkowska, H ;

Billmeier, A ;

Blyth, CO ;

Bock, R ;

Boimska, B ;

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 ;

Gal, J ;

Ganz, R ;

Gazdzicki, M ;

Geist, W ;

Gladysz, E ;

Grebieszkow, J ;

Günther, J ;

Harris, JW ;

Hegyi, S ;

Henkel, T ;

Hill, LA ;

Hümmler, H ;

Igo, G .

PHYSICS LETTERS B, 1999, 459 (04) :679-686

[3] Fluctuation probes of quark deconfinement [J].

Asakawa, M ;

Heinz, U ;

Müller, B .

PHYSICAL REVIEW LETTERS, 2000, 85 (10) :2072-2075

[4] Charged-particle multiplicity near midrapidity in central Au plus Au collisions at √sNN=56 and 130 GeV [J].

Back, BB ;

Baker, MD ;

Barton, DS ;

Basilev, S ;

Bates, BD ;

Baum, R ;

Betts, RR ;

Bialas, A ;

Bindel, R ;

Bogucki, W ;

Budzanowski, A ;

Busza, W ;

Carroll, A ;

Ceglia, M ;

Chang, YH ;

Chen, AE ;

Coghen, T ;

Conner, C ;

Czyz, W ;

Dabrowski, B ;

Decowski, MP ;

Despet, M ;

Fita, P ;

Fitch, J ;

Friedl, M ;

Galuszka, K ;

Ganz, R ;

Garcia, E ;

George, N ;

Godlewski, J ;

Gomes, C ;

Griesmayer, E ;

Gulbrandsen, K ;

Gushue, S ;

Halik, J ;

Halliwell, C ;

Haridas, P ;

Hayes, A ;

Heintzelman, GA ;

Henderson, C ;

Hollis, R ;

Holynski, R ;

Holzman, B ;

Johnson, E ;

Kane, J ;

Katzy, J ;

Kita, W ;

Kotula, J ;

Kraner, H ;

Kucewicz, W .

PHYSICAL REVIEW LETTERS, 2000, 85 (15) :3100-3104

[5] Event-by-event fluctuations in ultrarelativistic heavy-ion collisions [J].

Baym, G ;

Heiselberg, H .

PHYSICS LETTERS B, 1999, 469 (1-4) :7-11

[6] Slowing out of equilibrium near the QCD critical point [J].

Berdnikov, B ;

Rajagopal, K .

PHYSICAL REVIEW D, 2000, 61 (10) :1-9

[7] INCLUSIVE REACTIONS [J].

BOGGILD, H ;

FERBEL, T .

ANNUAL REVIEW OF NUCLEAR AND PARTICLE SCIENCE, 1974, 24 :451-513

[8] Charmonium suppression by comover scattering in Pb+Pb collisions [J].

Gavin, S ;

Vogt, R .

PHYSICAL REVIEW LETTERS, 1997, 78 (06) :1006-1009

[9] Anisotropic J/Ψ suppression in nuclear collisions -: art. no. 044902 [J].

Heiselberg, H ;

Mattiello, R .

PHYSICAL REVIEW C, 1999, 60 (04) :5

[10]

HEISELBERG H, 1998, P CONT ADV QCD MINN, P430

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