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

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

2003-10-09

arxiv.org/abs/hep-ph/0310115v2

ECONF C030603:JEU03,2003; Eur.Phys.J.C33:s250-s252,2004

Physics

High Energy Physics

High Energy Physics - Phenomenology

3 pages, 3 figures included, svjour.cls. Based on the invited talks at Flavor Physics and CP Violation (FPCP 2003), Paris, Fra

Scientific paper

10.1140/epjcd/s2003-03-124-3

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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