منابع مشابه
Weak Phase Γ from Ratio of B →
The ratio of partial decay rates for charged and neutral B mesons to Kπ final states provides information on the weak phase γ ≡ Arg(V ∗ ub) when augmented with information on the CP-violating asymmetry in the Kπ mode. The statistical requirements for a useful determination of γ and certain systematic uncertainties are examined in the light of present information about the decays B → Kπ, B → Kπ,...
متن کاملWeak Phase Γ from Color - Allowed B → Dk Rates
The ratios of partial rates for charged B decays to the recently observed DK mode and to the two DCPK final states (CP = ±) are shown to constrain the weak phase γ ≡ Arg(V ∗ ub). The smaller color-suppressed rate, providing further information about the phase, can be determined from these rates alone. Present estimates suggest that, while the first constraints can already be obtained in a high ...
متن کاملDetermining the Weak Phase γ in the Presence of Rescattering
We suggest a new technique to determine the CKM phase γ without neglecting the (soft) final state rescattering effects. We use (time integrated) B meson decay rates to π's and K's. A set of 5 ∆S = 0 (or 1 ∆S = 0 and 4 ∆S = 1) decay rates is used to compute the strong phases and magnitudes of the tree level and penguin contributions as functions of γ. These are used to predict a ∆S = 1 (∆S = 0) ...
متن کاملDetermination of the weak phase γ = arg ( V ∗ ub )
Various strategies for extracting or constraining the weak phase γ with controlled theoretical uncertainties are reviewed. Measurements of the rates for the hadronic decays B± → πK provide largely model-independent information on γ. Hadronic uncertainties enter only at the level of nonfactorizable contributions to the decay amplitudes that are power-suppressed in Λ/mb and, simultaneously, viola...
متن کاملDiscrete Ambiguities in the Measurement of the Weak Phase γ
Several methods have been devised for measuring the phase γ of the Cabibbo-Kobayashi-Maskawa [1] unitarity triangle, using decays of the type B → DK. It is shown that these and other direct CP-violation measurements suffer from discrete ambiguity which is at least 8-fold. Combining two measurement methods helps reduce the ambiguity and the experimental error. The measurement sensitivity and new...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 2002
ISSN: 0556-2821,1089-4918
DOI: 10.1103/physrevd.65.113008