Charge separation relative to the reaction plane in Pb-Pb collisions at sqrt[s(NN)] = 2.76 TeV.
Charge separation relative to the reaction plane in Pb-Pb collisions at sqrt[s(NN)] = 2.76 TeV.
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DOI：
10.1103/physrevlett.110.012301
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发表时间：
2013-01
影响因子：
8.6
通讯作者：
B. Abelev;J. Adam;D. Adamová;A. Adare;M. Aggarwal;G. Aglieri Rinella;A. Agocs;A. Agostinelli
中科院分区：
文献类型：
--
作者：
B. Abelev;J. Adam;D. Adamová;A. Adare;M. Aggarwal;G. Aglieri Rinella;A. Agocs;A. Agostinelli
在LHC上用ALICE探测器测量了sqrt[s（NN）] = 2.76 TeV的Pb-Pb碰撞的电荷依赖方位角关联。赝快度范围内的两粒子和三粒子电荷相关方位关联|η| < 0.8是碰撞中心性、赝快度中的粒子分离和横动量的函数。一个明确的信号与电荷相关的分离相对于反应平面兼容的观察，这表明很少或没有碰撞能量的依赖性相比，在RHIC能量的测量。这为理解在RHIC和LHC能量下观察到的依赖电荷的方位角关联的性质提供了新的见解。
Measurements of charge-dependent azimuthal correlations with the ALICE detector at the LHC are reported for Pb-Pb collisions at sqrt[s(NN)] = 2.76 TeV. Two- and three-particle charge-dependent azimuthal correlations in the pseudorapidity range |η| < 0.8 are presented as a function of the collision centrality, particle separation in pseudorapidity, and transverse momentum. A clear signal compatible with a charge-dependent separation relative to the reaction plane is observed, which shows little or no collision energy dependence when compared to measurements at RHIC energies. This provides a new insight for understanding the nature of the charge-dependent azimuthal correlations observed at RHIC and LHC energies.