Regular Article - Theoretical Physics
Dimesoatom breakup in the Coulomb field
Joint Institute for Nuclear Research, Dubna, Moscow Region, 141980, Russia
* e-mail: firstname.lastname@example.org
Accepted: 31 October 2019
Published online: 14 January 2020
Momentum and angular distributions of charged meson pairs () 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.
© Società Italiana di Fisica (SIF) and Springer-Verlag GmbH Germany, part of Springer Nature, 2020