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arXiv · hep-ph/9411269

Effective Chiral Lagrangians with an SU(3)-Broken Vector-Meson Sector

A. Bramon·A. Grau·G. Pancheri
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Abstract

The accuracy of effective chiral lagrangians including vector-mesons as (hidden symmetry) gauge fields is shown to be improved by taking into account SU(3)-breaking in the vector-meson sector. The masses, $M_V$, and couplings to the photon field and pseudoscalar pairs, $f_{Vγ}$ and $g_{VPP}$, are all consistently described in terms of two parameters, which also fit the values for the pseudoscalar decay-constants, $f_P$, and charge radii, $ $. The description of the latter is further improved when working in the context of chiral perturbation theory.

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A. Bramon, A. Grau, G. Pancheri. 1994-11-11. Effective Chiral Lagrangians with an SU(3)-Broken Vector-Meson Sector. https://doi.org/10.1016/0370-2693(94)01625-m

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