Soft Dilepton Production in Au-Au Collisions by Twophoton Processes
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摘要: 计算了由准相干双光子相互作用导致的低横动量双轻子产生。 对于不同的质量范围， 准相干双光子相互作用在低横动量区域都很重要。 将计算结果与相对论重离子对撞机RHIC的PHENIX实验数据进行比较， 发现随着双轻子不变质量的增加， 准相干双光子过程的修正作用会更加明显。Abstract: The production of the low transverse momentum (PT) dileptons induced by semicohe rent twophoton interaction is calculated. The numerical results are compared with the experimental data from the PHENIX， the modification of the semicoherent twophoton interaction is remarkable in the low transverse momentum region for different mass bins. We find that the contribution of semicoherent twophoton processes is more evident in the large dilepton mass region.
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