Melić, Blaženka
(2004)
Estimate of the charming penguin contributions to B > pi pi.
European Physical Journal C: Particles and Fields, 33
(1).
S250S252.
ISSN 14346044
Abstract
We consider the problem of factorization in B decays and illustrate the calculation of nonfactorizable contributions employing the QCD lightcone sum rule method. We present a more detailed calculation of the "charming penguin" contributions as a potential source of the substantial nonfactorizable O(1/m(b)) effects in the B > pi pi decay. Although the predicted corrections are not sizable, by calculating the CP asymmetry we illustrate how such corrections can accumulate to a visible effect. In conclusion, nonfactorizable contributions in nonleptonic B decays into charmonium are briefly discussed.
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