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Lepton pair photoproduction in peripheral relativistic heavy-ion collisions

Aug 10, 2022, 5:45 PM


仁杰 王 (University of Science and Technology of China)


We study the lepton pair photoproduction in peripheral heavy-ion collisions based on the formalism in our previous work. We present the numerical results for the distributions of the transverse momentum, azimuthal angle and invariant mass for e+e− and µ+µ− pairs as functions of the impact parameter and other kinematic variables in Au+Au collisions. Our calculation incorporates the information on the transverse momentum and polarization of photons which is essential to describe the experimental data. We observe a broadening effect in the transverse momentum for lepton pairs with and without smear effects. We also observe a significant enhancement in the distribution of cos(2ϕ) for µ+µ− pairs. Our results provide a baseline for future studies of other higher order corrections beyond Born approximation and medium effects in the lepton pair production.

Primary author

仁杰 王 (University of Science and Technology of China)


Prof. Qun Wang (University of Science and Technology of China) Shi Pu (University of Science and Technology of China) Prof. Yifei Zhang (University of Science and Technology of China) 硕 林 (中国科学技术大学)

Presentation materials