Spectroscopy of eta' mesic nuclei with (p,d) reaction

TL;DR

This paper discusses an upcoming experiment to study eta' mesic nuclei via the (p,d) reaction, aiming to observe in-medium modifications of the eta' meson related to chiral symmetry restoration.

Contribution

It proposes an inclusive spectroscopy method to detect eta' mesic states and details the experimental setup at GSI for this investigation.

Findings

Potential observation of eta' mesic states near the emission threshold.

Insights into in-medium eta' meson properties and chiral symmetry restoration.

Experimental framework for future measurements.

Abstract

We are going to perform an inclusive spectroscopy experiment of eta' mesic nuclei with the 12C(p,d) reaction to study in-medium properties of the eta' meson. In nuclear medium, the eta' meson mass may be reduced due to partial restoration of chiral symmetry. In case of sufficiently large mass reduction and small absorption width of eta' at normal nuclear density, peak structures of eta' mesic states in 11C will be observed near the eta' emission threshold even in an inclusive spectrum. The experiment will be carried out at GSI with proton beam supplied by SIS using FRS as a spectrometer. The detail of the experiment is described.