Transverse-momentum-flow correlations in relativistic heavy-ion collisions
Transverse-momentum-flow correlations in relativistic heavy-ion collisions
复制标题
相对论性重离子碰撞中的横向动量流相关性
DOI：
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
P. Bożek
中科院分区：
文献类型：
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作者：
P. Bożek
研究了横向动量与流动方位角不对称性之间的相关性。相关系数定义在事件中发射的强子的平均横向动量与椭圆形或三角形流动系数的平方之间。流体动力学模型预测横向动量与椭圆流呈正相关，而在 LHC 能量下的 Pb-Pb 碰撞中与三角形流几乎没有相关性。在 p-Pb 碰撞中，新的相关观测值对碰撞第一阶段的能量沉积机制非常敏感。
The correlation between the transverse momentum and the azimuthal asymmetry the flow is studied. A correlation coefficient is defined between the average transverse momentum of hadrons emitted in an event and the square of the elliptic or triangular flow coefficient. The hydrodynamic model predicts a positive correlation of the transverse momentum with the elliptic flow, and almost no correlation with the triangular flow in Pb-Pb collisions at LHC energies. In p-Pb collisions the new correlation observable is very sensitive to the mechanism of energy deposition in the first stage of the collision.