Multichannel chiral approach for kaonic hydrogen

TL;DR

This paper provides an exact momentum-space solution for the kaonic hydrogen 1s level, integrating it with low energy antikaon-nucleon scattering data to improve understanding of the bound state.

Contribution

It introduces a novel exact momentum-space approach to analyze kaonic hydrogen and its low energy interactions, advancing previous approximate methods.

Findings

Accurate description of the 1s level in kaonic hydrogen

Consistent integration with low energy ar{K}N data

Enhanced understanding of kaonic bound states

Abstract

We present an exact solution to the $K^{-}$-proton bound state problem formulated in the momentum space. The 1s level characteristics of the kaonic hydrogen are described together with the available low energy $\bar{K}N$ data.