Access to the Kaon Radius with Kaonic Atoms

Abstract

A method to determine the kaon radius from the spectra of kaonic atoms is put forward. The few lowest‐lying transitions in kaonic atoms and their sensitivity to the size of the kaon for ions in the nuclear charge range Z=1−100$Z=1-100$ are analyzed, taking into account finite‐nuclear‐size, finite‐kaon‐size, recoil, and leading‐order quantum‐electrodynamic effects. Additionally, the opportunities for extracting the kaon mass and nuclear radii are demonstrated by examining the sensitivity of the transition energies in kaonic atoms.