On the Coulomb corrections to the total cross section of the interaction of the ${\pi }^{+}{\pi }^{-}$ atom with ordinary atoms at high energy

Abstract

The size of ${\pi }^{+}{\pi }^{-}$ atom in the low lying states is considerably smaller than the radius of atomic screening. Due to that we can neglect this screening calculating the contribution of multi-photon exchanges. We obtain the analytic formula for Coulomb corrections which works with a very good accuracy for the ground state of ${\pi }^{+}{\pi }^{-}$ atom.

Comments: 9 pages, LATEX with 1 Postscript figure