Properties of the vector meson nonet at large N_c beyond the chiral limit

Details Properties of the vector meson nonet at large N_c beyond the chiral limit Properties of the vector meson nonet at large N_c beyond the chiral limit

2005-06-22

arxiv.org/abs/hep-ph/0506220v2

Phys.Rev. D73 (2006) 085013

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, strongly rewritten, more focussed on the central issue

Scientific paper

10.1103/PhysRevD.73.085013

Masses and especially coupling constants of the vector meson nonet are determined in the large-N_c limit, but beyond the chiral limit taking into account terms up to quadratic order in the Goldstone boson masses. With two input parameters five coupling constants for hadronic and dilepton decays are determined which agree very well with the experimental results. The obtained parameters are also used to calculate the pion and kaon decay constant in the large-N_c limit. A consistent picture is only obtained, if the correct assignment of the N_c-dependence of the electromagnetic charges of the quarks is taken into account.

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