Theoretical Analysis of B -> D^{**} pi Decays

Details Theoretical Analysis of B -> D^{**} pi Decays Theoretical Analysis of B -> D^{**} pi Decays

1997-09-12

arxiv.org/abs/hep-ph/9709327v2

Phys.Lett. B418 (1998) 173-180

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages; 1 reference added and some typos corrected; version to appear in Physics Letters B

Scientific paper

10.1016/S0370-2693(97)01384-1

The decays B -> D^{**} pi, where D^{**} is a narrow p-wave charm resonance, are investigated in the context of a generalized factorization hypothesis, including the leading nonfactorizable corrections. The decay rates for these processes are related to the corresponding semileptonic rates at maximum recoil. It is pointed out that the current data on the branching ratio for the decay B^- -> D_2^{*0} pi^- may pose a problem for theory. We predict that future, more accurate measurements of this branching ratio will find a value B(B^- -> D_2^{*0} pi^-) = 4 * 10^{-4}, a factor 5 lower than the current central value.

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