Comparison of 1/mQ^2 Corrections in Mesons and Baryons

Details Comparison of 1/mQ^2 Corrections in Mesons and Baryons Comparison of 1/mQ^2 Corrections in Mesons and Baryons

1993-10-04

arxiv.org/abs/hep-ph/9310216v1

Phys.Rev.D49:2359-2362,1994

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages, LaTeX, 3 self-contained LaTeX figures in separate file

Scientific paper

10.1103/PhysRevD.49.2359

We extend our relativistic quark model to the study of the decay Lambda_b -> Lambda_c ell nu and verify that the model satisfies the heavy-quark symmetry constraints at order 1/mQ^2. We isolate a strong dependence on a parameter which measures the relative distortion in the light-quark wave functions of the Lambda_b and Lambda_c. This parameter and the 1/mQ^2 corrections turn out to be small. The dependence on a corresponding parameter in the meson case leads to large 1/mQ^2 corrections.

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