Dimesoatom breakup in the Coulomb field

  • L. G. Afanasyev
  • S. R. Gevorkyan
  • O. O. VoskresenskayaEmail author
Regular Article - Theoretical Physics


Momentum and angular distributions of charged meson pairs \(h^+h^-\) (\(h=\pi , K\)) from elementary atom (EA) breakup (ionization) in the Coulomb field of a target atom are considered in the Born and Glauber approximations. Exploiting the fact that the atomic screening of the target Coulomb potential is important at small transfer momenta, while multi-photon exchanges are essential at large transfer momenta, we express the cross sections of EA breakup as a sum of two terms. In the region of modest transfer momenta the cross section is determined by the single-photon exchange (first Born approximation) accounting for the target atoms screening, whereas at large transfer momenta using the unscreened potential allows one to take into account all multi-photon exchanges and obtain the cross section of EA breakup in closed analytical form.


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Copyright information

© Società Italiana di Fisica (SIF) and Springer-Verlag GmbH Germany, part of Springer Nature 2020

Authors and Affiliations

  • L. G. Afanasyev
    • 1
  • S. R. Gevorkyan
    • 1
  • O. O. Voskresenskaya
    • 1
    Email author
  1. 1.Joint Institute for Nuclear ResearchMoscow RegionRussia

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