XI-PRODUCTION IN HEAVY-ION COLLISIONS AT THE AGS

被引：20

作者：

EISEMAN, SE

ETKIN, A

FOLEY, KJ

HACKENBURG, RW

LONGACRE, RS

LOVE, WA

MORRIS, TW

PLATNER, ED

SAULYS, AC

LINDENBAUM, SJ

CHAN, CS

EFSTATHIADIS, EF

KRAMER, MA

ZHAO, K

ZHU, Y

HALLMAN, TJ

MADANSKY, L

AHMAD, S

BONNER, BE

BUCHANAN, JA

CHIOU, CN

CLEMENT, JM

MUTCHLER, GS

机构：

[1] CUNY CITY COLL,NEW YORK,NY 10031

[2] JOHNS HOPKINS UNIV,BALTIMORE,MD 21218

[3] RICE UNIV,HOUSTON,TX 77251

来源：

PHYSICS LETTERS B | 1994年 / 325卷 / 3-4期

关键词：

D O I：

10.1016/0370-2693(94)90019-1

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report the first observation of XI- in heavy ion collisions at the AGS. The lifetime of XI- measured agrees very well with the particle data group value. We present the observed XI- effective mass spectrum and the rapidity distribution after acceptance correction. In the measured rapidity region (1.4-2.9) for 14.6 GeV/c Si on Pb, we obtained a yield of 0.25 +/- 0.04 XI- per central event and a ratio of N(XI-)/N(LAMBDA) = 0.12 +/- 0.02 using a fireball+ model (a model which includes a fireball plus a term simulating a cascade) tor acceptance correction (see text for systematic error). This result is larger than any cascade model prediction so far.

引用

页码：322 / 326

页数：5

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