Hanbury-Brown-Twiss interferometry with quantum transport of the interfering pair
Hanbury-Brown-Twiss interferometry with quantum transport of the interfering pair
复制标题
汉伯里-布朗-特威斯干涉测量与干涉对的量子输运
DOI：
10.1103/physrevc.78.014908
复制
发表时间：
2008-05
影响因子：
3.1
通讯作者：
Yu, Li-Li
中科院分区：
文献类型：
--
作者：
Zhang, Wei-Ning;Wong, Cheuk-Yin;Yu, Li-Li
在高能重离子碰撞中π介子系统演化的后期阶段，当π介子经历多次散射时，干涉对的量子输运在决定Hanbury-Brown-Twiss（HBT）干涉特性方面起着重要作用.我们采用路径积分方法研究了干涉对的量子输运，其中体物质的演化由相对论流体力学描述，而两个干涉π介子的路径则由测试粒子遵循流体的位置和速度场来描述.此外，我们还研究了粒子衰变产生的次级π介子源对AGS和RHIC能量核碰撞的影响。我们发现，量子传输的干扰对导致HBT半径接近那些化学冻结配置。然而，粒子衰变导致HBT半径大于化学冻结配置。因此，组合效应引起从化学冻结配置和热冻结配置提取的那些之间的HBT半径。在HBT计算中，在π多重散射阶段对干涉对进行适当的量子处理，对于我们理解重离子碰撞中HBT干涉测量的特性是非常重要的。
In the late stage of the evolution of a pion system in high-energy heavy-ion collisions when pions undergo multiple scatterings, the quantum transport of the interfering pair of identical pions plays an important role in determining the characteristics of the Hanbury-Brown-Twiss (HBT) interference. We study the quantum transport of the interfering pair using the path-integral method, in which the evolution of the bulk matter is described by relativistic hydrodynamics while the paths of the two interfering pions by test particles following the fluid positions and velocity fields. We investigate in addition the effects of secondary pion sources from particle decays, for nuclear collisions at AGS and RHIC energies. We find that quantum transport of the interfering pair leads to HBT radii close to those for the chemical freeze-out configuration. Particle decays however lead to HBT radii greater than those for the chemical freeze-out configuration. As a consequence, the combined effects give rise to HBT radii between those extracted from the chemical freeze-out configuration and the thermal freeze-out configuration. Proper quantum treatments of the interfering pairs in HBT calculations at the pion multiple scattering stage are important for our understanding of the characteristics of HBT interferometry in heavy-ion collisions.
登录
查看更多内容
DOI：
10.1016/s0370-1573(99)00032-0
发表时间：
1999-01
期刊：
Physics Reports
影响因子：
--
作者：
U. Wiedemann;U. Heinz
通讯作者：
U. Wiedemann;U. Heinz
DOI：
10.1063/1.3048320
发表时间：
1965
期刊：
--
影响因子：
--
作者：
R. Feynman;A. Hibbs
通讯作者：
R. Feynman;A. Hibbs
DOI：
10.1007/s100520000413
发表时间：
2000-03
期刊：
The European Physical Journal C - Particles and Fields
影响因子：
--
作者：
WA98 Collaboration M. M. Aggarwal-WA98-Collaboration-M.-M.-Aggarwal-102809219;E. al.
通讯作者：
WA98 Collaboration M. M. Aggarwal-WA98-Collaboration-M.-M.-Aggarwal-102809219;E. al.
DOI：
10.1088/0954-3899/22/1/015
发表时间：
1996
期刊：
Journal of Physics G
影响因子：
--
作者：
H. Stöcker
通讯作者：
H. Stöcker
影响因子：
3.1
作者：
W. Zhang;M. J. Efaaf;Cheuk-Yin Wong Harbin Institute of Technology;Harbin;P.R.China.;Oak Ridge National Laboratory;Oak Ridge;U.S.A.;U. Tennessee;Knoxville
通讯作者：
W. Zhang;M. J. Efaaf;Cheuk-Yin Wong Harbin Institute of Technology;Harbin;P.R.China.;Oak Ridge National Laboratory;Oak Ridge;U.S.A.;U. Tennessee;Knoxville