Spectroscopy of $\eta'$-nucleus bound states at GSI and FAIR --- very preliminary results and future prospects ---

TL;DR

This paper discusses the ongoing experimental efforts at GSI and FAIR to detect ta'-nucleus bound states, which are linked to fundamental QCD phenomena like chiral symmetry restoration and the ta' mass reduction.

Contribution

It provides a preliminary overview of experimental approaches and future plans for studying ta'-nucleus bound states at GSI and FAIR facilities.

Findings

Initial experimental results on ta'-nucleus states

Insights into ta' mass reduction at finite density

Future experimental prospects and plans

Abstract

The possible existence of \eta'-nucleus bound states has been put forward through theoretical and experimental studies. It is strongly related to the \eta' mass at finite density, which is expected to be reduced because of the interplay between the $U_A(1)$ anomaly and partial restoration of chiral symmetry. The investigation of the C(p,d) reaction at GSI and FAIR, as well as an overview of the experimental program at GSI and future plans at FAIR are discussed.