To the origin of the difference of FSI phases in $B\toππ$ and $B\toρρ$ decays

2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/179749The 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 $B_d\toππ$ channel and are considerably smaller in the $B_d\toρρ$ one. Direct CP asymmetries of $B_d\toππ$ decays which are determined by FSI phases are considered as well.19 pages, 1 figureHigh Energy Physics - PhenomenologyHigh Energy Physics - ExperimentTo the origin of the difference of FSI phases in $B\toππ$ and $B\toρρ$ decaystext