# CP violation and final state interactions in $B \to K \pi\pi$ decays

Abstract : Effects of CP violation and of final state interactions between pairs of pseudoscalar mesons are studied in three-body B+, B-, B0 and antiB0 decays into K pi pi. An alternative approach to the isobar model for three-body B decays is proposed. It is based on the QCD factorization approximation and the knowledge of the meson-meson form factors. Some phenomenological charming penguin amplitudes are needed to describe the branching fractions, direct CP asymmetries of the quasi-two-body B --> K*(892) pi and B --> K0*(1430) pi decays as well as the K pi effective mass and the helicity angle distributions. The experimental branching fractions for the B --> K0*(1430) pi decay, obtained by the Belle and BaBar collaborations using the isobar model, are larger than our predictions by about 52 per cent.
Document type :
Conference papers

http://hal.in2p3.fr/in2p3-00179555
Contributor : Dominique Girod <>
Submitted on : Tuesday, October 16, 2007 - 8:47:17 AM
Last modification on : Wednesday, September 16, 2020 - 4:08:24 PM

### Identifiers

• HAL Id : in2p3-00179555, version 1
• ARXIV : 0710.2469

### Citation

L. Lesniak, B. El-Bennich, A. Furman, R. Kaminski, B. Loiseau, et al.. CP violation and final state interactions in $B \to K \pi\pi$ decays. International Europhysics Conference on High Energy Physics - HEP 2007, Jul 2007, Manchester, United Kingdom. ⟨in2p3-00179555⟩

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