Omega mesons in medium - revisited
High Energy Physics - Phenomenology
2007-05-23 v1 Nuclear Theory
Abstract
Recent experimental observation by the CBELSA/TAPS collaboration indicates a downward mass shift of the meson when put into a nuclear medium. Therefore it is worthwhile to take a look at theoretical approaches that can describe this mass shift. One such hadronic model was introduced by Klingl et al. (Nucl.Phys. A650:299-312). We will demonstrate that the heavy baryon limit approximation used there has no justification and returns wrong results. The results obtained with a correct treatment of the relevant -channel lead to unreasonable results for the selfenergy in medium.
Keywords
Cite
@article{arxiv.hep-ph/0703170,
title = {Omega mesons in medium - revisited},
author = {Fabian Eichstaedt and Stefan Leupold and Ulrich Mosel},
journal= {arXiv preprint arXiv:hep-ph/0703170},
year = {2007}
}
Comments
9 Pages, 6 figures, To appear in the proceedings of 45th International Winter Meeting on Nuclear Physics (Bormio 2007), Bormio, Italy, 14-21 Jan 2007