Antibaryon production in sulphur nucleus collisions at 200 GeV per nucleon

被引：0

作者：

Alber, T

Appelshauser, H

Bachler, J

Bartke, J

Bialkowska, H

Bloomer, MA

Bock, R

Braithwaite, WJ

Brinkmann, D

Brockmann, R

Buncic, P

Chan, P

Cramer, JG

Cramer, PB

Derado, I

Eckardt, V

Eschke, J

Favuzzi, C

Ferenc, D

Fleischmann, B

Foka, P

Freund, P

Fuchs, M

Gazdzicki, M

Gladysz, E

Grebieszkow, J

Gunther, J

Harris, JW

Hoffmann, M

Jacobs, P

Kabana, S

Kadija, K

Kowalski, M

Kuhmichel, A

Lee, JY

Ljubicic, A

Margetis, S

Mitchell, JT

Morse, R

Nappi, E

Odyniec, G

Paic, G

Panagiotou, AD

Petridis, A

Piper, A

Posa, F

Poskanzer, AM

Puhlhofer, F

Rauch, W

Renfordt, R

机构：

[1] UNIV ATHENS,DEPT PHYS,ATHENS,GREECE

[2] UNIV BARI,DIPARTIMENTO FIS,BARI,ITALY

[3] IST NAZL FIS NUCL,I-70126 BARI,ITALY

[4] LAWRENCE BERKELEY LAB,BERKELEY,CA

[5] INST NUCL PHYS,KRAKOW,POLAND

[6] GESELL SCHWERIONENFORSCH MBH,DARMSTADT,GERMANY

[7] UNIV FRANKFURT,FACHBEREICH PHYS,W-6000 FRANKFURT,GERMANY

[8] UNIV FREIBURG,FAK PHYS,W-7800 FREIBURG,GERMANY

[9] UNIV MARBURG,FACHBEREICH PHYS,W-3550 MARBURG,GERMANY

[10] UNIV WASHINGTON,SEATTLE,WA 98195

[11] UNIV WARSAW,INST EXPTL PHYS,WARSAW,POLAND

[12] INST NUCL STUDIES,PL-00681 WARSAW,POLAND

[13] RUDJER BOSKOVIC INST,ZAGREB,CROATIA

来源：

PHYSICS LETTERS B | 1996年 / 366卷 / 1-4期

关键词：

D O I：

10.1016/0370-2693(95)01379-2

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Antiproton production near midrapidity has been studied in central collisions of S-32 With sulphur, silver and gold nuclei at 200 GeV per nucleon. The measured transverse mass distributions can be described by an exponential with inverse slope parameters of about 200 MeV, similar to those obtained from <(Lambda)over bar> spectra. The rapidity density increases weakly with the target mass, ranging from 0.4 to 0.7. The ratio <(Lambda)/(p)over bar> near midrapidity is approximately 1.4 on average, significantly larger than the corresponding ratio observed in proton-proton and proton-nucleus collisions.

引用

页码：56 / 62

页数：7

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