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We investigate the hyperon semileptonic decays within the framework of QCD sum rules. The flavor SU (3) symmetry breaking effects are analyzed via the relevant form factors and corresponding branching fractions. Employing the z -series parameterization to capture the q² dependence of form factors, we calculate the hyperon semileptonic decay rates and confront them with the recent experimental measurements. Moreover, we calculate as well the non-standard tensor form factors, which involve certain new physics beyond the standard model.
Zhang et al. (Thu,) studied this question.
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