ANTIBARYON (PBAR, LAMBDA-BAR) PRODUCTION IN RELATIVISTIC NUCLEAR COLLISIONS

被引：48

作者：

SCHAFFNER, J ^{[1
]}

MISHUSTIN, IN ^{[1
]}

SATAROV, LM ^{[1
]}

STOCKER, H ^{[1
]}

GREINER, W ^{[1
]}

机构：

[1] LV KURCHATOV ATOM ENERGY INST,MOSCOW 123182,USSR

来源：

ZEITSCHRIFT FUR PHYSIK A-HADRONS AND NUCLEI | 1991年 / 341卷 / 01期

关键词：

D O I：

10.1007/BF01281273

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

The relativistic meson field theory is used to study the effects of the in-medium interaction on the predicted antibaryon abundancy in hot hadronic matter. It is demonstrated that subtreshold production of antiprotons in high energy heavy ion collisions at E(lab) = 1-2 GeV/nucleon is enhanced by 2-3 orders of magnitude as compared to a standard fireball model estimate. Furthermore, we show that after the inclusion of interactions the anti-hyperon yields, e.g. LAMBDABAR/pi-, are enhanced by about a factor ten. Predicted yields are in excess of the data measured by the NA35 and WA85 collaborations at CERN. The annihilation of antibaryons in surrounding matter at the final stage of the reaction may essentially reduce their abundancy.

引用

页码：47 / 52

页数：6

共 34 条

[31] PROBING DENSE NUCLEAR-MATTER VIA NUCLEAR COLLISIONS [J].