منابع مشابه
1 Analysis of B s → KK decays in the PQCD
We study Bs → KK decays in the framework of the PQCD. We show that the branching ratios of Bs → (KK, KK̄) are about (22.43, 25.78)× 10 for φ3(γ) ≃ 72, which are consistent with the model-independent estimations. We find that the typical scale of the decays is near 1.7 GeV. We also point out that the induced strong phase δ is around 207 so that the direct CP asymmetry of Bs → KK could reach 15%. ...
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We analyze three-body decays of and . Under the factorization approach, there are tree level diagrams for these decay modes and the transition matrix element of decay is factorized into a form factor multiplied by decay constant and form factor multiplied into weak vertices form factor. The transition matrix element of decay is also factorized into a form factor multiplied into weak vertic...
متن کاملB?J/?(?,K) Decays within QCD Factorization Approach
We used QCD factorization for the hadronic matrix elements to show that the existing data, in particular the branching ratios BR ( ?J/?K) and BR ( ?J/??), can be accounted for this approach. We analyzed the decay within the framework of QCD factorization. We have complete calculation of the relevant hard-scattering kernels for twist-2 and twist-3. We calculated this decays in a special scale ...
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We report an improved measurements of direct CP violation in the decay B0 → K+π− using 350 fb−1 of data and measurements of B meson decays to two kaons using 253 fb−1 of data. The measured CP violating asymmetries are ACP(Kπ) = −0.113 ± 0.022(stat.)± 0.008(syst.), ACP(Kπ) = 0.04±0.04(stat.)±0.02(syst.) and ACP(ππ) = 0.02±0.08(stat.)±0.01(syst.), where the latter correspond to the intervals −0.0...
متن کاملRare K- (vs.) B-decays
We present a concise review of the recent theoretical progress concerning the standard model calculations of the rare K L → π 0 ν ¯ ν, K + → π + ν ¯ ν(γ), ¯ B → X s γ, and ¯ B → X s + − decays. The current status and future of the model-independent analysis of rare K-and B-meson decays within constrained minimal-flavor-violation is also briefly discussed. * Speaker. † We thank the organizers fo...
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ژورنال
عنوان ژورنال: International Journal of Modern Physics A
سال: 2011
ISSN: 0217-751X,1793-656X
DOI: 10.1142/s0217751x11051974