Induced absorption and annihilation in hadronic hydrogen atoms

Abstract

The induced absorption or annihilation in the collisions of the hydrogen hadronic atoms in the excited states with ordinary hydrogen have been described in a unified manner with the elastic scattering, Stark transitions, and Coulomb de-excitation in the framework of a close-coupling approach including both the open and closed channels corresponding to both the stationary and non-stationary states of hadronic atom. The general features of the induced absorption cross sections have been studied in a wide range of the complex energy-shift values. The total and differential cross sections of all processes have been calculated for π − p, K − p, and \(\bar p p\) atoms with the principal quantum numbers n = 2 − 8 and kinetic energy from 0.001 eV up to 100 eV.