Scattering Processes of Excited Exotic Atoms: Close-Coupling Approach

TL;DR

This paper investigates scattering processes of excited exotic atoms with hydrogen using a close-coupling approach, accounting for vacuum polarization and strong interactions, and provides cross sections for cascade modeling.

Contribution

It introduces a comprehensive close-coupling method to analyze scattering of excited exotic atoms, including effects of closed channels and strong interactions.

Findings

Calculated differential and integral cross sections for various scattering processes.

Assessed the impact of closed channels on scattering outcomes.

Provided data for cascade calculations of exotic atoms.

Abstract

The scattering processes of exotic atoms in excited states from hydrogen such as elastic scattering, Stark transitions and Coulomb de-excitation are studied within a close coupling approach. The vacuum polarization and the strong interaction shifts of $ns$-states (in case of hadronic atoms) are taken into account. The differential and integral cross sections of the above processes are calculated to use them as the input in cascade calculations. The effect of closed channels on the scattering processes is investigated.