Lepton pair production in heavy-ion collisions in perturbation theory

被引：0
|
作者：
Bartoš, E. [1 ,3 ]
Gevorkyan, S.R. [1 ,4 ]
Kuraev, E.A. [1 ]
Nikolaev, N.N. [2 ,5 ]
机构：
[1] Joint Inst. for Nuclear Research, 141980 Dubna, Russia
[2] L.D. Landau Inst. for Theor. Phys., 142432 Chernogolovka, Russia
[3] Department of Theoretical Physics, Comenius University, 84248 Bratislava, Slovakia
[4] Yerevan Physics Institute, 375036 Yerevan, Armenia
[5] Institut fur Kernphysik, Forshchungszentrum Jülich, D-52425 Jülich, Germany
来源：
Physical Review A - Atomic, Molecular, and Optical Physics | 2002年 / 66卷 / 04期
关键词：
Approximation theory - Electron scattering - High energy physics - Kinematics - Perturbation techniques - Photons - Quantum theory;
D O I：
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中图分类号：
学科分类号：
摘要：
Lepton pair production in heavy-ion collisions in coulomb fields of two relativistic heavy ions in perturbation theory was studied. Analytical expressions were obtained for the differential cross section of the process in the lowest order in the fine-structure constant valid for any momentum transfer and in a wide kinematic region for produced particles. Results showed that expressions that were gauge invariant and finite were obtained by considering all relevant terms in the corresponding order.
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页码：427201 / 427201
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