Bounds on Heavy-to-Heavy Baryonic Form Factors
Abstract
Upper and lower bounds are established on the Lambdab -> Lambdac semileptonic decay form factors by utilizing inclusive heavy-quark-effective-theory sum rules. These bounds are calculated to leading order in LambdaQCD/mQ and alphas. The O(alphas2 beta0) corrections to the bounds at zero recoil are also presented. Several form factor models used in the literature are compared with our bounds.
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