In-medium Properties of the {\eta}'-Meson from Photonuclear Reactions
Abstract
Investigations of in-medium properties of the {\eta}'-meson are presented. The photoproduction of {\eta}'-mesons off C, Ca, Nb and Pb nuclei has been measured with the Crystal Barrel/TAPS detector system at the ELSA accelerator in Bonn. Comparing the meson yield per nucleon within a nucleus to the yield on a free nucleon, information on the absorption of the meson through inelastic channels in the nuclear medium and the related in-medium width of the meson is provided. From this so called transparency ratio we found the in-medium width of the {\eta}'-meson to be of the order of 20 MeV. The measured width is sufficently narrow to encourage a search for {\eta}' mesic states. Recent results on the momentum distribution of the transparency ratio and in-medium width of the {\eta}'-meson are presented and discussed.
Keywords
Cite
@article{arxiv.1209.1026,
title = {In-medium Properties of the {\eta}'-Meson from Photonuclear Reactions},
author = {M. Nanova},
journal= {arXiv preprint arXiv:1209.1026},
year = {2019}
}
Comments
5 pages, 2 figures, to appear in the Proceedings of MESON 2012, 12th International Workshop on Meson Production, Properties and Interaction, Krakow, Poland