CHIRAL-SYMMETRY BREAKING IN HIDDEN LOCAL SYMMETRY

Chiral breaking for baryon and meson interaction is formulated in the framework of the hidden local symmetric theory of the non-linear sigma model on the manifold U(3)(L) X U(3)(R)/U(3)(V). The chiral symmetry-breaking term transforms as (3, 3*) under U(3)(L) x U(3)(R) at the first order. Several low-energy theorems are derived for the electromagnetic interaction of baryon. The symmetry-breaking term preserves SU(2) X U(1) symmetry; we have confirmed that the Sakurai formula of the electromagnetic interaction of vector meson holds and directly shown that the photon mass vanishes. The fundamental gauge coupling constant g and the mixing angle theta of vector meson are fixed by independent phenomena of vector meson masses and e ($) over bar e decay of vector meson. Using these values of g and theta, we extend our analysis to the nucleon form factor and indicate a breaking of the OZI rule and a sizable contents of s-quark pair in the nucleon.