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

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

2007-04-03

arxiv.org/abs/0704.0404v1

Phys.Lett.B652:203-212,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

19 pages, 1 figure

Scientific paper

10.1016/j.physletb.2007.07.017

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 $B_d\to\pi\pi$ channel and are considerably
smaller in the $B_d\to\rho\rho$ one. Direct CP asymmetries of $B_d\to\pi\pi$
decays which are determined by FSI phases are considered as well.

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