This research demonstrates improved accuracy of effective chiral lagrangians in vector-mesons, suggesting significant implications for theoretical physics.
The accuracy of effective chiral lagrangians including vector-mesons as (hidden symmetry) gauge fields is shown to be improved by including SU(3)-breaking in the vector-meson sector. The masses (Mv), coupling to the phton field (fvγ) and pseudoscalar pairs (gvpp) are all consistently described in terms of two parameters, which also fit the values for the pseudoscalar decay constants, fp, and charge radii, < r^2_p >. The description of the latter is further improved when working in the context of chiral perturbation theory.
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A. et al. (1994) studied this question.
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