Deeply bound meson-nuclear states: concepts and strategies

TL;DR

This paper reviews recent theoretical and experimental advances in understanding deeply bound meson-nuclear states, focusing on pionic atoms and antikaon-nuclear systems, highlighting their interactions and potential for new nuclear states.

Contribution

It provides a comprehensive update on the theoretical interpretation of pionic atoms and discusses the state-of-the-art understanding of low-energy antikaon-nucleon interactions relevant to bound states.

Findings

Updated interpretation of 1s pionic atom states based on chiral effective theory

Detailed analysis of low-energy $ar{K}N$ interactions in the subthreshold region

Discussion of strategies for identifying deeply bound meson-nuclear states

Abstract

This presentation reviews recent developments in the understanding of low-energy pion- and kaon-nucleon interactions as they relate to deeply bound pionic atoms and possible antikaon-nuclear bound states. A brief update is given on 1s states of pionic atoms, summarizing their theoretical interpretation based on in-medium chiral effective field theory. This is followed by a state-of-the-art discussion of low-energy $\bar{K}N$ interactions, with special emphasis on the subthreshold region relevant to the proposed kaon-nuclear systems.