Two-Pion Interferometry for the Granular Source in Heavy Ion Collisions at LHC Energies

Two-Pion Interferometry for the Granular Source in Heavy Ion Collisions at LHC Energies
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大型强子对撞机能量重离子碰撞中颗粒源的二π介子干涉测量

DOI:
10.1088/1009-0630/14/6/01
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发表时间:
2012-06
影响因子:
1.7
通讯作者:
Zhang Weining
Zhang Weining
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Yin Hongjie;Efaaf, M. J.;Zhang Weining

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在夸克-胶子等离子体液滴颗粒源模型下,研究了大型强子对撞机(LHC)重离子碰撞产生的π介子发射源的时空特性。两π干涉测量结果表明,纵向干涉半径对系统的初始破裂时间敏感。对于较大的分裂时间,LHC源的纵向干涉半径的值大于在相对论重离子对撞机(RHIC)的顶部能量的碰撞中产生的源。然而,如果源在较小的破碎时间与较高的液滴的初始温度的纵向半径的值是较小的。LHC源在“侧”方向上的横向干涉半径值大于RHIC源。颗粒源特征量的成像分析与干涉半径一致。
The space-time characters of the pion-emitting sources produced in the heavy ion collisions at the Large Hadron Collider (LHC) energies are investigated in a granular source model of quark-gluon plasma droplets. The results of two-pion interferometry indicate that the longitudinal interferometry radius is sensitive to the initial breakup time of the system. For a larger breakup time the values of the longitudinal interferometry radius for the LHC source are larger than that of the source produced in the collisions at the Relativistic Heavy Ion Collider's (RHIC) top energy. However, the values of the longitudinal radius are smaller if the source fragments at a smaller breakup time with a higher initial temperature of the droplets. The values of the transverse interferometry radius in the "side" direction for the LHC sources are larger than those for the RHIC source. The imaging analyses for the characteristic quantities of the granular sources are consistent with the interferometry radii.
DOI: 10.1103/physrevlett.87.082301
发表时间: 2001-07
影响因子: 8.6
作者:
C. Adler;Z. Ahammed;C. Allgower;J. Amonett;B. Anderson;M. Anderson;G. S. Averichev;J. Balewski
通讯作者: C. Adler;Z. Ahammed;C. Allgower;J. Amonett;B. Anderson;M. Anderson;G. S. Averichev;J. Balewski
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期刊: Journal of Physics G
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影响因子: 8.6
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影响因子: 8.6
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