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Lepton pair photoproduction in peripheral relativistic heavy-ion collisions

Aug 10, 2022, 5:45 PM
15m

Speaker

仁杰 王 (University of Science and Technology of China)

Description

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)

Co-authors

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