A scheme to identify collective transverse flow in relativistic heavy ion collisions at CERN SPS

被引：4

作者：

Srivastava, DK ^{[1
]}

Sarkar, S ^{[1
]}

Roy, PK ^{[1
]}

Pal, D ^{[1
]}

Sinha, B ^{[1
]}

机构：

[1] SAHA INST NUCL PHYS,CALCUTTA 700064,W BENGAL,INDIA

来源：

PHYSICS LETTERS B | 1996年 / 379卷 / 1-4期

关键词：

Quark Gluon Plasma; relativistic heavy ion collisions; collective flow; transverse expansion; thermalization; thermal photons; thermal dileptons; longitudinal expansion; hydrodynamics;

D O I：

10.1016/0370-2693(96)00410-8

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A judicious selection of projectile-target combinations in relativistic heavy ion collisions at CERN SPS may provide us with a number of systems having a similar particle rapidity density per unit transverse area. There may be a formation of quark gluon plasma, followed by hadronization, if the energy density attained is large enough, Electromagnetic radiations from such systems normalized to the initial transverse area would be identical if they do not undergo a transverse expansion. A deviation from this scaling behaviour is shown to provide a novel signature for the transverse flow effects in such experiments. Such a deviation is expected to emerge clearly in a comparison of results for Pb+Pb system, e.g., with those for S+Au.

引用

页码：54 / 59

页数：6

共 37 条

[21] STUDIES OF THE HYDRODYNAMIC EVOLUTION OF MATTER PRODUCED IN FLUCTUATIONS IN PBARP COLLISIONS AND IN ULTRARELATIVISTIC NUCLEAR COLLISIONS .2. TRANSVERSE-MOMENTUM DISTRIBUTIONS [J].