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QED box amplitude in heavy fermion production

  • J. Portolés
  • P.D. Ruiz-Femenía
Theoretical Physics

Abstract.

We evaluate the two-photon box contribution to heavy fermion production in electron positron annihilation, that provides \({\cal O}(\alpha^2)\) electromagnetic corrections to the Born cross section. The study of its non-relativistic expansion, relevant at energies close to the threshold of production, is also performed. We also verify that the threshold expansion of the one-loop integrals correctly reproduces our results, thus extending the applicability of this technique to heavy fermion production diagrams.

Keywords

Positron Annihilation Heavy Fermion Electron Positron Electron Positron Annihilation Born Cross Section 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg / Società Italiana di Fisica 2002

Authors and Affiliations

  • J. Portolés
    • 1
  • P.D. Ruiz-Femenía
    • 1
  1. 1.Departament de Física Teòrica, IFIC, Universitat de València - CSIC, Apt. Correus 22085, 46071 València, Spain ES

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