Vector Meson Masses in Chiral Perturbation Theory

Details Vector Meson Masses in Chiral Perturbation Theory Vector Meson Masses in Chiral Perturbation Theory

1997-04-02

arxiv.org/abs/hep-ph/9704212v2

Nucl.Phys. B501 (1997) 495-517

Physics

High Energy Physics

High Energy Physics - Phenomenology

17 pages, LaTeX, 2 figures. Revised version to appear in Nuclear Physics B. One reference added, some misprints, mainly in the

Scientific paper

10.1016/S0550-3213(97)00391-X

We discuss the vector meson masses within the context of Chiral Perturbation Theory performing an expansion in terms of the momenta, quark masses and 1/Nc. We extend the previous analysis to include isospin breaking effects and also include up to order $p^4$. We discuss vector meson chiral perturbation theory in some detail and present a derivation from a relativistic lagrangian. The unknown coefficients are estimated in various ways. We also discuss the relevance of electromagnetic corrections and the implications of the present calculation for the determination of quark masses.

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