Recent topics of mesic atoms and mesic nuclei -- $\phi$ mesic nuclei exist ?--

TL;DR

This paper investigates the in-medium modifications of the $$-meson spectral function and the existence of $$-mesic nuclei through various nuclear reactions, analyzing bound states and medium effects.

Contribution

It provides a theoretical study of $$-meson production and bound states in nuclei, considering medium modifications and reaction cross sections, which is a novel approach in this context.

Findings

Bound states of $$-mesic nuclei are studied.

Medium modifications significantly affect reaction cross sections.

Spectral shape analysis is crucial for understanding $$ properties.

Abstract

We study $\phi$-meson production in nuclei to investigate the in-medium modification of the $\phi$-meson spectral function at finite density. We consider (${\bar p},\phi$), ($\gamma,p$) and ($\pi^-,n$) reactions to produce a $\phi$-meson inside the nucleus and evaluate the effects of the medium modifications to reaction cross sections. The structures of the bound states, $\phi$-mesic nuclei, are also studied. For strong absorptive interaction cases, we need to know the spectrum shape in a wide energy region to deduce the properties of $\phi$.