Original scientific paper

Coulomb gauge qcd and the excited hadron spectru

Felipe Llanes-Estrada ; Depto. Física Teórica I, Universidad Complutense de Madrid,28040 Madrid, Spain
Stephen R. Cotanch ; Department of Physics, North Carolina State University, Raleigh, NC 27695, U. S. A.
Tim Van Cauteren ; Depto. Física Teórica I, Universidad Complutense de Madrid,28040 Madrid, Spain
Juan M. Torres-Rincon ; Depto. Física Teórica I, Universidad Complutense de Madrid,28040 Madrid, Spain
Pedro Bicudo ; Instituto Superior Tecnico, Avda. Rovisco Pais 1096, Lisbon, Portugal
Marco Cardoso ; Instituto Superior Tecnico, Avda. Rovisco Pais 1096, Lisbon, Portugal

Abstract

We discuss progress in understanding the light- and heavy-quark excited hadron spectrum from Coulomb gauge QCD. For light-quark systems, we highlight the insensitivity to spontaneous chiral symmetry breaking, which predicts Wigner parity-degeneracy in the highly-excited hadron spectrum and allows the quark-mass momentum dependence to be experimentally probed. For heavy-quark meson decays, we invoke the Franck-Condon principle, a consequence of small velocity changes for heavy quarks, to extract qualitative, but model-independent, structure insight from the momentum distribution of the decay products.

Keywords

excited hadron spectrum; light-quark and heavy-quark systems; Coulomb gauge QCD; spontaneous chiral symmetry breaking; Franck-Condon principle

Hrčak ID:

304631

URI

https://hrcak.srce.hr/304631

Publication date:

1.3.2011.

Article data in other languages: croatian

Visits: 117 *