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Estimate of the charming penguin contributions to B -> pi pi

Blazenka Melic
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Abstract

We consider the problem of factorization in B decays and illustrate the calculation of nonfactorizable contributions employing the QCD light-cone 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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Blazenka Melic. 2003-10-10. Estimate of the charming penguin contributions to B -> pi pi. https://doi.org/10.1140/epjcd%2Fs2003-03-124-3

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