Baryon and antibaryon production in hadronic and nuclear interactions

被引：18

作者：

Capella, A ^{[1
]}

Ferreiro, EG ^{[1
]}

Salgado, CA ^{[1
]}

机构：

[1] Univ Paris 11, Phys Theor & Hautes Energies Lab, CNRS URA D0063, F-91405 Orsay, France

来源：

PHYSICS LETTERS B | 1999年 / 459卷 / 1-3期

关键词：

heavy ion collisions; particle production; strangeness;

D O I：

10.1016/S0370-2693(99)00664-4

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We introduce a new formulation of the diquark breaking mechanism which describes with no free parameters the huge nuclear stopping observed in central nucleus-nucleus collisions. Supplemented, in the dual parton model, with strings originating from diquark-antidiquark pairs from the nucleon sea, it gives a substantial increase of hyperon and antihyperon yields from pPb to central PbPb collisions. Compared to data, this increase is slightly underestimated for Lambda's and Xi's but is five times too small for Omega's. Introducing final state interactions, a reasonable description of all baryon and antibaryon yields is achieved. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：27 / 32

页数：6

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