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arXiv 1710.02206hep-phnucl-th
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前向快度质子-核碰撞中的孤立光子产生

Isolated photon production in proton-nucleus collisions at forward rapidity

B. Ducloué, T. Lappi, H. Mäntysaari

摘要:

在彩色玻璃凝聚框架下,计算了质子-核碰撞中正向快度下的孤立光子产生。我们的计算使用偶极截面解决从运行耦合Balitsky-Kovchegov方程与初始条件适合深非弹性散射数据。为了比较,我们还更新了在相同的运动学的π介子生产的核修改因子的结果。我们目前的预测,未来的RHIC和大型强子对撞机测量在$\sqrt{s_{NN}}=200$ GeV和$\sqrt{s_{NN}}=8$ TeV。

英文摘要:

We calculate isolated photon production at forward rapidities in proton-nucleus collisions in the Color Glass Condensate framework. Our calculation uses dipole cross sections solved from the running coupling Balitsky-Kovchegov equation with an initial condition fit to deep inelastic scattering data. For comparison, we also update the results for the nuclear modification factor for pion production in the same kinematics. We present predictions for future forward RHIC and LHC measurements at $\sqrt{s_{NN}}=200$ GeV and $\sqrt{s_{NN}}=8$ TeV.

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