Strong Phases and Factorization for Color Suppressed Decays

Details Strong Phases and Factorization for Color Suppressed Decays Strong Phases and Factorization for Color Suppressed Decays

2003-06-26

arxiv.org/abs/hep-ph/0306254v2

Phys.Rev.D68:114009,2003

Physics

High Energy Physics

High Energy Physics - Phenomenology

38 pages, 6 figs, typos corrected

Scientific paper

10.1103/PhysRevD.68.114009

We prove a factorization theorem in QCD for the color suppressed decays B0-> D0 M0 and B0-> D*0 M0 where M is a light meson. Both the color-suppressed and W-exchange/annihilation amplitudes contribute at lowest order in LambdaQCD/Q where Q={mb, mc, Epi}, so no power suppression of annihilation contributions is found. A new mechanism is given for generating non-perturbative strong phases in the factorization framework. Model independent predictions that follow from our results include the equality of the B0 -> D0 M0 and B0 -> D*0 M0 rates, and equality of non-perturbative strong phases between isospin amplitudes, delta(DM) = delta(D*M). Relations between amplitudes and phases for M=pi,rho are also derived. These results do not follow from large Nc factorization with heavy quark symmetry.

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