Coulomb corrections in the lepton-pair production in ultrarelativistic nuclear collisions -: art. no. 022724
PHYSICAL REVIEW A, vol.72, no.2, 2005 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Volume: 72 Issue: 2
- Publication Date: 2005
- Doi Number: 10.1103/physreva.72.022724
- Journal Name: PHYSICAL REVIEW A
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Istanbul Kültür University Affiliated: No
Abstract
We solve the perturbative electron-positron pair production exactly by calculating the second-order Feynman diagrams. We compare our result with Born methods that include Coulomb corrections. We find that a small-momentum approximation is not adequate to obtain exact Coulomb corrections and higher-order terms should also be included. We also compare the impact parameter dependence cross sections.