Charmless 3-body B Decays: Resonant and Nonresonant Contributions

Details Charmless 3-body B Decays: Resonant and Nonresonant Contributions Charmless 3-body B Decays: Resonant and Nonresonant Contributions

2007-11-09

arxiv.org/abs/0711.1416v2

Int.J.Mod.Phys.A23:3229-3236,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages, talk presented at 4th International Conference on Flavor Physics (ICFP 2007), Beijing, China, Sept 24-28, 2007; add r

Scientific paper

10.1142/S0217751X08041888

Charmless 3-body decays of $B$ mesons are studied using a simple model based on the framework of the factorization approach. We have identified a large source of the nonresonant signal in the matrix elements of scalar densities, e.g. $$. This explains the dominance of the nonresonant background in $B\to KKK$ decays, the sizable nonresonant fraction of order $(35\sim 40)%$ in $K^-\pi^+\pi^-$ and $\bar K^0\pi^+\pi^-$ modes and the smallness of nonresonant rates in $B\to \pi\pi\pi$ decays. We have computed the resonant and nonresonant contributions to charmless 3-body decays and determined the rates for the quasi-two-body decays $B\to VP$ and $B\to SP$. Time-dependent CP asymmetries $\sin2\beta_{\rm eff}$ and $A_{CP}$ in $K^+K^-K_S,K_SK_SK_S,K_S\pi^+\pi^-$ and $K_S\pi^0\pi^0$ modes are estimated.

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