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.

9 pages, LATEX with 1 Postscript figure

Cited by in corpus (4)

• First measurement of the ${\pi }^{+}{\pi }^{-}$ atom lifetime
• Detection of ${\pi }^{+}{\pi }^{-}$atoms with the DIRAC spectrometer at CERN
• Measurement of the $\pi K$ atom lifetime and the $\pi K$ scattering length
• Contribution of ${\alpha }^2$-terms to the total interaction cross sections of relativistic elementary atoms with atoms of matter