- To the origin of the difference of FSI phases in $B\toππ$ and $B\toρρ$ decays The final state interactions (FSI) model in which soft rescattering of low mass intermediate states dominates is suggested. It explains why the strong interaction phases are large in the B_dtopipi channel and are considerably smaller in the B_dtorhorho one. Direct CP asymmetries of B_dtopipi decays which are determined by FSI phases are considered as well. 2 authors · Apr 3, 2007
