Various flows of black and grey particles produced in Mg-emulsion collisions at 4.5 A GeV/c

被引：1

作者：

高雁 ^{[1
]}

刘福虎 ^{[2
]}

N.N.Abd Allah ^{[3
]}

R.Bekmirzaev ^{[4
]}

机构：

[1] Department of Physics,Xinzhou Normal University

[2] Institute of Theoretical Physics,Shanxi University

[3] Department of Physics,Faculty of Science,Sohag University,Sohag,Egypt

[4] Nuclear Physics Department,Djizak State Pedagogical Institute,Djizzak 708000,Uzbekistan

来源：

中国物理C | 2011年 / 35卷 / 01期

基金：

中国国家自然科学基金;

关键词：

various flows; absolute flows; b-and g-particles; Mg-Em collisions;

D O I：

暂无

中图分类号：

O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

Various flow phenomena of black particles(b-particles) and grey particles(g-particles) produced in magnesium-emulsion(Mg-Em) collisions at 4.5 A GeV/c are reported.These flows are directed and elliptic transverse flows(v1 and v2) related by the azimuthal angle(),directed and elliptic reaction plane flows(vR1 and vR2) related by the projected angle(ψ) on the reaction plane,and directed and elliptic polar direction flows(vP1 and vP2) related by the polar angle(■).We extract absolute flows as the direct experimental values minus the isotropic theoretical values.The dependence of the various flows on the target particle multiplicity and on the angles(■,,ψ) is investigated.Our results show that the dependence of b-particle flows on the target size is obvious and for heavy targets the dependence on target particle multiplicity is slight.Compared with b-particles,g-particles have a slight dependence on the target size and target particle multiplicity.

引用

页码：40 / 43

页数：4