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

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

1994-11-11

arxiv.org/abs/hep-ph/9411269v1

Phys.Lett. B345 (1995) 263-268

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, LaTeX file, A postscript version can be obtained from anonymous ftp at ftp://ftp.ifae.es/preprint.ft/ )

Scientific paper

10.1016/0370-2693(94)01625-M

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, $f_{V\gamma}$ 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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