Indication for large rescatterings in charmless rare b decays
Journal
Modern Physics Letters A
Journal Volume
68
Journal Issue
1
Pages
1763-1772
Date Issued
2003
Author(s)
Abstract
The current wealth of charmless B decay data may suggest the presence of final state rescattering. In a factorized amplitude approach, better fits are found by incorporating two SU(3) rescattering phase differences, giving δ ∼ 65° and σ ∼ 90°-100°. Fitting with unitarity phase φ3 as a fit parameter gives φ3 ∼ 96°, the CP asymmetries Aππ, Sππ agree better with BaBar, and the σ phase is slightly lower. Keeping φ3 = 60° fixed in fit gives Sππ ∼ -0.9, which agrees better with Belle. With the sizable δ, σ rescattering phases as fitted, many direct CP asymmetries flip sign, and B0 → π0π0, K-K + rates axe of order 10-6, which can be tested soon.
SDGs
Type
journal article