Rescattering information fromB→KK¯decays
نویسندگان
چکیده
منابع مشابه
Rescattering E ects in Heavy Quark Decays
Heavy quark decays serve as a powerful tool for testing the Standard Model and, since it probes the quarks of all three generations, provide invaluable possibilities to study CP violation. However, the interpretation of experimental observables in terms of fundamental parameters is often less than clear. Rare hadronic decays of B mesons, for example, proceed through both tree level Cabibbo-supp...
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A number of B meson decays may proceed only through participation of the spectator quark, whether through amplitudes proportional to fB/mB or via rescattering from other less-suppressed amplitudes. An expected hierarchy of amplitudes in the absence of rescattering will be violated by rescattering corrections. Such violations could point the way toward channels in which final-state interactions ...
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Final-state interaction effects in charmless Bu,d,s → PP decays are studied. We investigate the B 0 → π+π−, π0π0 rates and the Kπ direct CP violations, which lead to the so-called Kπ puzzle in CP violation. Our main results are as follows: (i) Results are in agreement with data in the presence of FSI. (ii) For B decays, the π+π− and π0π0 rates are suppressed and enhanced respectively by FSI. (i...
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Recently, the final state strong interactions in nonleptonic B decays were investigated in a formalism based on hadronic unitarity and dispersion relations in terms of the off-shell mass squared of the B meson. We consider an heuristic derivation of the dispersion relations in the mass variables using the reduction LSZ formalism and find a discrepancy between the spectral function and the dispe...
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The treatment of elastic final state interactions (FSI) under a symmetry group is presented. The proposed method is based on Watson’s theorem, i.e. on symmetry properties of the S-matrix and on its unitarity. This theorem provides an easy way to introduce rescattering effects by defining final state interactions mixing matrices. A symmetry group fixes the structure of such mixing matrices, and ...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 1998
ISSN: 0556-2821,1089-4918
DOI: 10.1103/physrevd.58.113005