Strong phases and factorization for color suppressed decays
Jun, 200338 pages
Published in:
- Phys.Rev.D 68 (2003) 114009
e-Print:
- hep-ph/0306254 [hep-ph]
Report number:
- MIT-CTP-3370
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Abstract:
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.- 13.25.Hw
- anti-B0: hadronic decay
- D*(2010)
- W: exchange
- quantum chromodynamics: factorization
- amplitude analysis
- Feynman graph
- nonperturbative
- anti-B0: branching ratio
- quark: strangeness
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