What can we learn from $B\to$ $ρ(ω) K$ decays?

Details What can we learn from $B\to$ $ρ(ω) K$ decays? What can we learn from $B\to$ $ρ(ω) K$ decays?

2001-12-03

arxiv.org/abs/hep-ph/0112022v1

Phys.Lett. B525 (2002) 56-62

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, 1 figure, final version to appear in PLB

Scientific paper

10.1016/S0370-2693(01)01418-6

We show that in the PQCD approach the $B\to \rho(\omega) K$ decays display not only the dynamical penguin enhancement, the mechanism responsible for the large branching ratios (BRs) of $B\to \phi K$ decays, but also the importance of annihilation contributions. We find that the CP asymmetries (CPAs) of $B\to \rho^{\pm}K^{\mp}$, $B^{\mp}\to \rho^0(\omega)K^{\mp}$ (class I) are all over 50%.

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