Two-pion interferometry for viscous hydrodynamic sources

Two-pion interferometry for viscous hydrodynamic sources
复制标题

粘性流体动力源的二π介子干涉测量

DOI:
10.1088/1674-1137/36/5/006
复制
发表时间:
2010-08
期刊:
影响因子:
3.6
通讯作者:
Zhang Wei-Ning
Zhang Wei-Ning
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Efaaf, M. J.;Su Zhong-Qian;Zhang Wei-Ning

文献摘要

参考文献

被引文献

相似文献

用数值方法研究了在超相对论重离子碰撞中产生的初始夸克-胶子等离子体(QGP)的(1+1)维粘性流体力学的时空演化。粒子发射源经历了从QGP到强子气体的交叉转变。我们考虑了强耦合QGP通常的剪切粘度以及在交叉区域显著增加的体粘度。对粘性流体动力源进行了双介子汉伯里-布朗-特维斯干涉测量。分析表明,如果只考虑剪切黏度,黏度对双介子黏度计算结果的影响很小。体粘度导致了更大的横向冻结构型的介子发射源,从而增加了横向HBT半径。经Bjorken纵向标度计算得到的震源纵向HBT半径与实验数据吻合较好。
The space-time evolution of the (1+1)-dimensional viscous hydrodynamics with an initial quark-gluon plasma (QGP) produced in ultrarelativistic heavy ion collisions is studied numerically. The particle-emitting sources undergo a crossover transition from the QGP to hadronic gas. We take into account a usual shear viscosity for the strongly coupled QGP as well as the bulk viscosity which increases significantly in the crossover region. The two-pion Hanbury-Brown-Twiss (HBT) interferometry for the viscous hydrodynamic sources is performed. The HBT analyses indicate that the viscosity effect on the two-pion HBT results is small if only the shear viscosity is taken into consideration in the calculations. The bulk viscosity leads to a larger transverse freeze-out configuration of the pion-emitting sources, and thus increases the transverse HBT radii. The results of the longitudinal HBT radius for the source with Bjorken longitudinal scaling are consistent with the experimental data.
DOI: --
发表时间: 2009
期刊: --
影响因子: --
作者:
U. Heinz;R. Furnstahl;M. Lisa;J. Shigemitsu
通讯作者: U. Heinz;R. Furnstahl;M. Lisa;J. Shigemitsu
DOI: 10.1088/1126-6708/2003/10/064
发表时间: 2003-09
影响因子: 5.4
作者:
P. Kovtun;D. Son;A. Starinets
通讯作者: P. Kovtun;D. Son;A. Starinets
DOI: 10.1103/physrevc.80.054906
发表时间: 2009-03
期刊: Physical Review C
影响因子: 3.1
作者:
A. Monnai;Tetsufumi Hirano
通讯作者: A. Monnai;Tetsufumi Hirano
DOI: 10.1103/physrev.58.919
发表时间: 1940-11-01
期刊: PHYSICAL REVIEW
影响因子: --
作者:
Eckart, C
通讯作者: Eckart, C
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