论文标题
Lepton对通过重离子碰撞中的两个光子过程产生
Lepton Pair Production Through Two Photon Process in Heavy Ion Collisions
论文作者
论文摘要
本文研究了相对论重离子碰撞中Lepton Pairs具有低横向动量的电磁产生。我们通过采用模型来估计初始光子的横向动量贡献，即可以在等效光子近似中计算出传入光子的平均横向动量平方。我们进一步为软光子辐射得出了所有QED重新召集，该辐射在LHC处的超外侧碰撞中提供了很好的描述。对于外围和中央碰撞，还讨论了与介质的多种相互作用以及夸克 - 杜松等离子体的磁场贡献所产生的额外$ P_T $ -BOACHENES效应。
This paper investigates the electromagnetic production of lepton pairs with low transverse momentum in relativistic heavy ion collisions. We estimate the initial photons' transverse momentum contributions by employing models where the average transverse momentum squared of the incoming photon can be calculated in the equivalent photon approximation. We further derive an all order QED resummation for the soft photon radiation, which gives an excellent description of the ATLAS data in ultra-peripheral collisions at the LHC. For peripheral and central collisions, additional $p_T$-broadening effects from multiple interaction with the medium and the magnetic field contributions from the quark-gluon plasma are also discussed.
