Investigation ofKp- andKd-atom formation and their collisional processes with hydrogen and deuterium targets by the classical-trajectory Monte Carlo method

Abstract

The classical-trajectory Monte Carlo method has been used to study the capture of negative kaons by hydrogen and deuterium atoms; subsequently, the elastic scattering, Stark mixing, and Coulomb deexcitation cross sections of $\mathit{Kp}$ and $\mathit{Kd}$ atoms have been determined. The results for kaonic atom formation confirm the initial conditions that have been parametrically applied by most atomic cascade models. Our results show that Coulomb deexcitation in $\mathit{Kp}$ and $\mathit{Kd}$ atoms with $\ensuremath{\Delta}n>1$ is important in addition to $n=1$. We have shown that the contribution of molecular structure effects to the cross sections of the collisional processes is larger than the isotopic effects of the targets. We have also compared our results with the semiclassical approaches.