Coulomb corrections in the lepton-pair production in ultrarelativistic nuclear collisions

Guclu M. C., Kovankaya G., Yilmaz M.

PHYSICAL REVIEW A, cilt.72, sa.2, 2005 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 72 Sayı: 2
  • Basım Tarihi: 2005
  • Doi Numarası: 10.1103/physreva.72.022724
  • Dergi Adı: PHYSICAL REVIEW A
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED)
  • İstanbul Teknik Üniversitesi Adresli: Evet

Özet

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.