TRANSVERSE BARYON FLOW AS POSSIBLE EVIDENCE FOR A QUARK-GLUON-PLASMA PHASE

被引：56

作者：

LEVAI, P ^{[1
]}

MULLER, B ^{[1
]}

机构：

[1] DUKE UNIV,DEPT PHYS,DURHAM,NC 27706

来源：

PHYSICAL REVIEW LETTERS | 1991年 / 67卷 / 12期

关键词：

D O I：

10.1103/PhysRevLett.67.1519

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In order to investigate the coupling between the collective flow of nucleons and pions in hot pion-dominated hadronic matter, we calculate the pion-nucleon drag coefficient in linearized transport theory. We find that the characteristic time for flow equalization is longer than the time scale of the expansion of a hadronic fireball created in high-energy collisions. The analysis of transverse-momentum data from p + pBAR collisions at square-root s = 1.8 TeV reveals the same flow velocity for mesons and antinucleons. We argue that this may be evidence for the formation of a quark-gluon plasma in these collisions.

引用

页码：1519 / 1522

页数：4

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