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

D. Yu. Ivanov·L. Szymanowski
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Abstract

The size of $π^+π^-$ 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 $π^+π^-$ atom.

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D. Yu. Ivanov, L. Szymanowski. 1998-11-30. On the Coulomb corrections to the total cross section of the interaction of the $π^+π^-$ atom with ordinary atoms at high energy. https://doi.org/10.1007/s100500050265

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