PHI-MESON PRODUCTION IN ULTRARELATIVISTIC HEAVY-ION COLLISIONS

被引：24

作者：

BERENGUER, M ^{[1
]}

SORGE, H ^{[1
]}

GREINER, W ^{[1
]}

机构：

[1] LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87544

来源：

PHYSICS LETTERS B | 1994年 / 332卷 / 1-2期

关键词：

D O I：

10.1016/0370-2693(94)90851-6

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The production of phi mesons is studied in the framework of relativistic quantum molecular dynamics. We analyze the contributing sources and find that strong chromoelectric fields from string fusion (color ropes) and hadronic rescattering enhance the phi yield in central S(200A GeV) + U collisions considerably. RQMD predicts different scaling of vector meson (phi, rho0 and omega) decay yields with atomic mass numbers of the colliding system. The calculations give a factor of two enhancement of phi and rho0 versus a forty percent suppression of w decays in S + U, if normalized on pion multiplicity and compared to pp reactions at the same energy. The calculated double ratio of phi/rho0+omega decays in the dimuon channel for S+U and p+p/W reactions compares well with recent measurements from the NA38 and HELIOS/3 collaborations at CERN.

引用

页码：15 / 19

页数：5

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