On the role of the final state interactions in rare B-decays

Abstract

The effects of final state interactions (FSI) in hadronic B-decays are investigated. The model for FSI, based on Regge phenomenology of high-energy hadronic interactions is proposed. It is shown that this model explains the pattern of phases in matrix elements of $B\to \pi \pi$ and $B\to \rho \rho$ decays. These phases play an important role for CP-violation in B-decays. The most precise determination of the unitarity triangle angle $\alpha$ from $B_d\to \rho \pi$ decays is performed. The relation between CP-asymmetries in $B\to K\pi$ decays is discussed. It is emphasized that the large distance FSI can explain the structure of polarizations of the vector mesons in B-decays and other puzzles like a very large branching ratio of the B-decay to ${\bar{\Xi }}_c{\Lambda }_c$.

Comments: 19 pages