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Branching Ratio and CP Violation of B to pi pi Decays in Perturbative QCD Approach by Lu, C. D.; Ukai, K.; Yang, M. Z. is a scholarly article available to read on EtoBox.

What is Branching Ratio and CP Violation of B to pi pi Decays in Perturbative QCD Approach about?

We calculate the branching ratios and CP asymmetries for B^0 to pi^+pi^-, B^+ to pi^+pi^0 and B^0 to pi^0pi^0 decays, in a perturbative QCD approach. In this approach, we calculate non-factorizable and annihilation type contributions, in addition to the usual factorizable contributions. We found that the annihilation diagram contributions are not very small as previous argument. Our result is in agreement with the measured branching ratio of B to pi^+pi^- by CLEO collaboration. With a non-negligible contribution from annihilation diagrams and a large strong phase, we predict a large direct CP asymmetry in B^0 to pi^+pi^-, and pi^0pi^0, which can be tested by the current running B factories.

Author

Lu, C. D.; Ukai, K.; Yang, M. Z.

Published

2000

Language

EN