Multiplicity dependence of the pion source in S+A collisions at the CERN SPS

被引：14

作者：

Kaimi, K

Boggild, H

Boissevain, J

Cherney, M

Dodd, J

Esumi, S

Fabjan, CW

Fields, DE

Franz, A

Holzer, B

Humanic, TJ

Jacak, B

Jayanti, R

Kalechofsky, H

Kobayashi, T

Lee, YY

Leltchouk, M

Lorstad, B

Maeda, N

Medvedev, A

Miyabayashi, A

Murray, M

Nishimura, S

Noteboom, E

Pandey, SU

Piuz, F

Polychronakos, V

Potekhin, M

Poulard, G

Sakaguchi, A

SchmidtSorensen, J

SimonGillo, J

Sondheim, W

Sugitate, T

Sullivan, JP

Sumi, Y

vanHecke, H

Willis, WJ

Wolf, K

Xu, N

机构：

[1] NIELS BOHR INST,DK-2100 COPENHAGEN,DENMARK

[2] LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545

[3] CREIGHTON UNIV,OMAHA,NE 68178

[4] COLUMBIA UNIV,NEW YORK,NY 10027

[5] CERN,CH-1211 GENEVA 23,SWITZERLAND

[6] OHIO STATE UNIV,COLUMBUS,OH 43210

[7] NATL LAB HIGH ENERGY PHYS,TSUKUBA,IBARAKI 305,JAPAN

[8] LUND UNIV,S-22362 LUND,SWEDEN

[9] TEXAS A&M UNIV,COLLEGE STN,TX 77843

[10] BROOKHAVEN NATL LAB,UPTON,NY 11973

来源：

ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS | 1997年 / 75卷 / 04期

基金：

日本学术振兴会; 美国国家科学基金会;

关键词：

D O I：

10.1007/s002880050507

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

The emission of pions from relativistic heavy-ion. collisions of S+S, S+Ag and S+Pb at 200 GeV/nucleon is characterized using two-particle interferometry. The multiplicity dependence of the pion source parameters near multiplicity is studied. The transversal (Rt) and longitudinal (RI) pion source parameters are independent of the initial nuclei in the interaction and increase with increasing multiplicity. This suggests that the freeze-out process is governed mainly by the particle multiplicity, The multiplicity dependence is weaker than that expected from a simple model of a freeze-out at a constant density.

引用

页码：619 / 625

页数：7

共 35 条

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