Comparison of 1/mQ2 Corrections in Mesons and Baryons
Abstract
We extend our relativistic quark model to the study of the decay Lambdab -> Lambdac ell nu and verify that the model satisfies the heavy-quark symmetry constraints at order 1/mQ2. We isolate a strong dependence on a parameter which measures the relative distortion in the light-quark wave functions of the Lambdab and Lambdac. This parameter and the 1/mQ2 corrections turn out to be small. The dependence on a corresponding parameter in the meson case leads to large 1/mQ2 corrections.
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