Factorization, charming penguins, and all that
نویسندگان
چکیده
منابع مشابه
Factorization, Charming Penguins, and All That *
We discuss few selected topics related to the calculation of hadronic amplitudes relevant for two-body non-leptonic B decays. Introduction It is likely that most of the future results in B phenomenology, including the study of CP violation, will come from the measurements of two-body non-leptonic decays. The major theoretical problem in predicting the rates of these decays is the evaluation of ...
متن کاملCharming Penguins Strike Back
By using the recent experimental measurements of B → ππ and B → Kπ branching ratios, we find that factorization is unable to reproduce the observed BRs even taking into account the uncertainties of the input parameters. Charming and GIM penguins allow to reconcile the theoretical predictions with the data. Because of these large effects, we conclude, however, that it is not possible, with the p...
متن کاملCharming Penguins in B Decays
Full expressions of the B0 d → π+π− and B0 d → π0π0 amplitudes, given in terms of matrix elements of operators of the effective weak Hamiltonian, are used to study the dependence of the relevant branching ratios on the different contributions. The uncertainty in the extraction of the weak phase α from the measurement of the timedependent asymmetry in B0 d → π+π− decays is also analyzed. We find...
متن کاملTesting QCD factorisation and charming penguins in charmless B →
We try a global fit of the experimental branching ratios and CP-asymmetries of the charmless B → P V decays according to QCD factorisation. We find it impossible to reach a satisfactory agreement, the confidence level (CL) of the best fit is smaller than .1 %. The main reason for this failure is the difficulty to accomodate several large experimental branching ratios of the strange channels. Fu...
متن کاملQCD factorisation and charming penguins in charmless B →
We try a global fit of the experimental branching ratios and CP-asymmetries of the charmless B → P V decays according to QCD factorisation. We find it impossible to reach a satisfactory agreement, the confidence level (CL) of the best fit is smaller than .1 %. The main reason for this failure is the difficulty to accomodate several large experimental branching ratios of the strange channels. Fu...
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ژورنال
عنوان ژورنال: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
سال: 1998
ISSN: 0168-9002
DOI: 10.1016/s0168-9002(98)00239-3