中国物理学会高能物理分会第十一届全国会员代表大会暨学术年会

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.