Coupled-Channel Final-State Interactions through Reggeon Exchange for D(B) --> ππ, K \bar{K}

Details Coupled-Channel Final-State Interactions through Reggeon Exchange for D(B) --> ππ, K \bar{K} Coupled-Channel Final-State Interactions through Reggeon Exchange for D(B) --> ππ, K \bar{K}

1999-06-16

arxiv.org/abs/hep-ph/9906396v1

Phys.Lett. B460 (1999) 390-396

Physics

High Energy Physics

High Energy Physics - Phenomenology

LaTeX 14 pages, 1 ps figure

Scientific paper

10.1016/S0370-2693(99)00806-0

Coupled-channel final-state-interaction effects for D and B weak decays into \pi \pi and K \bar{K} are discussed in a Regge framework. It is found that the inclusion of coupled-channel effects significantly affects the results obtained previously in a quasi-elastic approximation. It is also shown that in the isospin I=0 channel the inelastic final-state transitions (\pi \pi)_{I=0} --> (K \bar{K})_{I=0} dramatically influence the phase of the B^0 --> (K \bar{K})_{I=0} amplitude.

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