Chiral Partners and their Electromagnetic Radiation -- Ingredients for a systematic in-medium calculation
Abstract
It is argued that the chiral partners of the lowest-lying hadrons are hadronic molecules and not three-quark or quark-antiquark states, respectively. As an example the case of a_1 as the chiral partner of the rho is discussed. Deconfinement -- or as a precursor large in-medium widths for hadronic states -- is proposed as a natural way to accommodate for the fact that at chiral restoration the respective in-medium spectra of chiral partners must become degenerate. Ingredients for a systematic and self-consistent in-medium calculation are presented with special emphasis on vector-meson dominance which emerges from a recently proposed systematic counting scheme for the mesonic sector including pseudoscalar and vector mesons as active degrees of freedom.
Cite
@article{arxiv.0811.2398,
title = {Chiral Partners and their Electromagnetic Radiation -- Ingredients for a systematic in-medium calculation},
author = {S. Leupold and M. F. M. Lutz and M. Wagner},
journal= {arXiv preprint arXiv:0811.2398},
year = {2015}
}
Comments
revised version: more references added