Event-by-event fluctuations of the kaon-to-pion ratio in central Pb plus Pb collisions at 158 GeV per nucleon

被引：84

作者：

Afanasiev, SV ^{[1
]}

Anticic, T

Bächler, J

Barna, D

Barnby, LS

Bartke, J

Barton, RA

Betev, L

Bialkowska, H

Billmeier, A

Blume, C

Blyth, CO

Boimska, B

Botje, M

Bracinik, J

Brady, FP

Bramm, R

Brun, R

Buncic, P

Carr, L

Cebra, D

Cooper, GE

Cramer, JG

Csató, P

Eckardt, V

Eckhardt, F

Ferenc, D

Filip, P

Fischer, HG

Fodor, Z

Foka, P

Freund, P

Friese, V

Ftacnik, J

Gál, J

Gázdzicki, M

Georgopoulos, G

Gladysz, E

Harris, JW

Hegyi, S

Hlinka, V

Höhne, C

Igo, G

Ivanov, M

Jacobs, P

Janik, R

Jones, PG

Kadija, K

Kolesnikov, VI

Kollegger, T

机构：

[1] Joint Inst Nucl Res, Dubna 141980, Russia

[2] Univ Calif Davis, Davis, CA 95616 USA

[3] Gesell Schwerionenforsch GmbH, GSI, D-64220 Darmstadt, Germany

[4] Inst Nucl Phys, PL-30055 Krakow, Poland

[5] CERN, CH-1211 Geneva, Switzerland

[6] MIT, Cambridge, MA 02139 USA

[7] KFKI Res Inst Particle & Nucl Phys, H-1121 Budapest, Hungary

[8] Comenius Univ, Bratislava 84215, Slovakia

[9] Univ Birmingham, Birmingham B15 2TT, W Midlands, England

[10] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA

[11] Univ Athens, Dept Phys, GR-15771 Athens, Greece

[12] Univ Frankfurt, Fachbereich Phys, D-60486 Frankfurt, Germany

[13] Univ Houston, Houston, TX 77204 USA

[14] Kent State Univ, Kent, OH 44242 USA

[15] Univ Calif Los Angeles, Los Angeles, CA 90024 USA

[16] Univ Marburg, Fachbereich Phys, D-35032 Marburg, Germany

[17] Max Planck Inst Phys, D-80505 Munich, Germany

[18] Yale Univ, New Haven, CT 06520 USA

[19] Inst Nucl Studies, PL-00681 Warsaw, Poland

[20] Univ Warsaw, Inst Expt Phys, PL-00681 Warsaw, Poland

[21] Univ Washington, Nucl Phys Lab, Seattle, WA 98195 USA

[22] Rudjer Boskovic Inst, Zagreb 10000, Croatia

[23] NIKHEF H, Amsterdam, Netherlands

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 86卷 / 10期

关键词：

D O I：

10.1103/PhysRevLett.86.1965

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present the first measurement of fluctuations from event to event in the production of strange particles in collisions of heavy nuclei. The ratio of charged kaons to charged pions is determined for individual central Pb + Pb collisions. After accounting for the fluctuations due to detector resolution and finite number statistics we derive ant upper limit on genuine nonstatistical fluctuations, which could be related to a first- or second-order QCD phase transition. Such fluctuations Lire shown to be very small.

引用

页码：1965 / 1969

页数：5

共 16 条

[1] The NA49 large acceptance hadron detector [J].

Afanasiev, S ;

Alber, T ;

Appelshäuser, H ;

Bächler, J ;

Barna, D ;

Barnby, LS ;

Bartke, J ;

Barton, RA ;

Betev, L ;

Bialkowska, H ;

Bieser, F ;

Billmeier, A ;

Blyth, CO ;

Bock, R ;

Bormann, C ;

Bracinik, J ;

Brady, FP ;

Brockmann, R ;

Brun, R ;

Buncic, P ;

Caines, HL ;

Cebra, D ;

Cooper, GE ;

Cramer, JG ;

Csato, P ;

Cyprian, M ;

Dunn, J ;

Eckardt, V ;

Eckhardt, F ;

Empl, T ;

Eschke, J ;

Ferguson, MI ;

Fessler, H ;

Fischer, HG ;

Flierl, D ;

Fodor, Z ;

Frankenfeld, U ;

Foka, P ;

Freund, P ;

Friese, V ;

Ftacnik, J ;

Fuchs, M ;

Gabler, F ;

Gal, J ;

Ganz, R ;

Gazdzicki, M ;

Gladysz, E ;

Grebieszkow, J ;

Günther, J ;

Harris, JW .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1999, 430 (2-3) :210-244

[2] A MODEL FOR LOW-PT HADRONIC REACTIONS WITH GENERALIZATIONS TO HADRON-NUCLEUS AND NUCLEUS-NUCLEUS COLLISIONS [J].

ANDERSSON, B ;

GUSTAFSON, G ;

NILSSONALMQVIST, B .

NUCLEAR PHYSICS B, 1987, 281 (1-2) :289-309

[3] 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

[4]

Becattini F., COMMUNICATION

[5] STATISTICAL TOOLS FOR PARTICLE IDENTIFICATION BY MASS MEASUREMENT [J].

GAZDZICKI, M .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1994, 345 (01) :148-155

[6] Fluctuations of particle ratios and the abundance of hadronic resonances [J].

Jeon, S ;

Koch, V .

PHYSICAL REVIEW LETTERS, 1999, 83 (26) :5435-5438

[7] HOW MUCH STRANGENESS PRODUCTION IS THERE IN ULTRARELATIVISTIC NUCLEUS-NUCLEUS COLLISIONS [J].

KAPUSTA, J ;

MEKJIAN, A .

PHYSICAL REVIEW D, 1986, 33 (05) :1304-1313

[8]

KAPUSTA JI, 1985, 858 U MINN SUP I

[9]

KARSCH F, 1995, NUCL PHYS A, V590, P367

[10]

Kluberg L, 1999, NUCL PHYS A, V661, p300C, DOI 10.1016/S0375-9474(99)85028-3

← 1 2 →