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
Publication date:
1.3.2011.
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