Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1854069 | Progress in Particle and Nuclear Physics | 2009 | 6 Pages |
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 a1 as the chiral partner of the Ï 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.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
S. Leupold, M.F.M. Lutz, M. Wagner,