Branching ratios for hyperon semi-invisible decays (hadronic ~10^{-5}, radiative <10^{-7}) are calculated with sizable one-loop corrections using effective Lagrangians.
Vector meson-baryon strong coupling contants in light cone QCD sum rules
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abstract
Using the most general form of the interpolating current of the baryons, the strong coupling constants of the light vector mesons with the octet baryons are calculated within the light cone QCD sum rules. The SU(3)_f symmetry breaking effects are taken into account in the calculations. It is shown that each of the electric and magnetic coupling constants can be described in terms of three universal functions. A detailed comparison of the results of this work on aforementioned couplings with the existing theoretical results is presented.
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Semi-invisible Hyperon Decays in the Effective Lagrangian Approach
Branching ratios for hyperon semi-invisible decays (hadronic ~10^{-5}, radiative <10^{-7}) are calculated with sizable one-loop corrections using effective Lagrangians.