Elliptic flow of thermal photons in heavy-ion collisions at energies available at the BNL Relativistic Heavy Ion Collider and at the CERN Large Hadron Collider
Elliptic flow of thermal photons in heavy-ion collisions at energies available at the BNL Relativistic Heavy Ion Collider and at the CERN Large Hadron Collider
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DOI：
10.1103/physrevc.84.064903
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发表时间：
2011-04
影响因子：
3.1
通讯作者：
H. Holopainen;S. Rasanen;K. Eskola
中科院分区：
文献类型：
--
作者：
H. Holopainen;S. Rasanen;K. Eskola
在RHIC和LHC实测强子谱约束下，利用理想流体动力学框架计算了$\sqrt{s_{NN}} = 200$ GeV Au+Au碰撞和$\sqrt{s_{NN}} = 2.76$ TeV Pb+Pb碰撞中的热光子横向动量谱和椭圆流。研究了结果对qcd -物质状态方程和光子发射率的敏感性，并根据PHENIX合作测量的光子p_T光谱讨论了光子v_2$。特别地，我们对当前LHC Pb+Pb碰撞的热光子$p_T$谱和椭圆流进行了预测。
We calculate the thermal photon transverse momentum spectra and elliptic flow in $\sqrt{s_{NN}} = 200$ GeV Au+Au collisions at RHIC and in $\sqrt{s_{NN}} = 2.76$ TeV Pb+Pb collisions at the LHC, using an ideal-hydrodynamical framework which is constrained by the measured hadron spectra at RHIC and LHC. The sensitivity of the results to the QCD-matter equation of state and to the photon emission rates is studied, and the photon $v_2$ is discussed in the light of the photonic $p_T$ spectrum measured by the PHENIX Collaboration. In particular, we make a prediction for the thermal photon $p_T$ spectra and elliptic flow for the current LHC Pb+Pb collisions.