AI Article Synopsis
- The analysis focuses on Bd,s-->KK decay modes within the standard model, using SU(3)-flavor symmetry and QCD-improved factorization to draw connections between different decay processes.
- A new set of sum rules is proposed to understand observables related to the Bd,s-->K0K0 decays.
- The study finds discrepancies between predicted branching ratios for Bs-->K+K- and experimental data, while also predicting the degree of U-spin breaking between Bd-->pi+pi- and Bs-->K+K- decays.
Article Abstract
We present a new analysis of Bd,s-->KK modes within the standard model (SM), relating them in a controlled way through SU(3)-flavor symmetry and QCD-improved factorization. We propose a set of sum rules for Bd,s-->K0K0 observables. We determine Bs-->KK branching ratios and CP asymmetries as functions of Adir(Bd-->K0K0), pointing out a conflict between BR(Bs-->K+K-) in the SM and data. Finally, we predict the amount of U-spin breaking between Bd-->pi+pi- and Bs-->K+K-.
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Source |
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| http://dx.doi.org/10.1103/PhysRevLett.97.061801 | DOI Listing |
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