Rescattering and electroweak penguin effects in strategies to constrain and determine the CKM angle γ from B → πK decays
نویسندگان
چکیده
منابع مشابه
Rescattering and Electroweak Penguin Effects in Strategies to Constrain and Determine the CKM Angle γ from B → πK Decays
A general parametrization of the B+ → π+K0 and B0 d → π−K+ decay amplitudes is presented. It relies only on the isospin symmetry of strong interactions and the phase structure of the Standard Model and involves no approximations. In particular, this parametrization takes into account both rescattering and electroweak penguin effects, which limit the theoretical accuracy of bounds on γ arising f...
متن کاملControlling Rescattering Effects in Constraints on the CKM Angle γ arising from B → πK Decays
It has recently been pointed out that the observables of the decay B+ → K+K0 and its charge conjugate allow us to take into account rescattering effects in constraints on the CKM angle γ arising from B → πK and Bd → πK modes, and that they play an important role to obtain insights into final-state interactions. In this paper, the formalism needed to accomplish this task is discussed in detail. ...
متن کاملthe CKM Angle γ with B → πK Decays
The decays B → πK and Bd → πK were observed by the CLEO collaboration last year; they may play an important role to probe the angle γ of the unitarity triangle of the CKM matrix. After a general parametrization of their decay amplitudes within the Standard Model, strategies to constrain and determine the CKM angle γ with the help of the corresponding CP-conserving and CP-violating observables a...
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As we pointed out recently, the neutral decays Bd → πK and Bd → πK may provide non-trivial bounds on the CKM angle γ. In this paper, we reconsider this approach in the light of recent CLEO data, which look very interesting. In particular, the results for the corresponding CP-averaged branching ratios are in favour of strong constraints on γ, where the second quadrant is preferred. Such a situat...
متن کاملConstraining the CKM angle γ and penguin contributions through combined B → πK branching ratios
Motivated by recent CLEO measurements of B → πK modes, we investigate their implications for the CKM angle γ and a consistent description of these decays within the Standard Model. Interestingly it turns out that already the measurement of the combined branching ratios B → πK and Bd → πK allows to derive stringent constraints on γ which are complementary to the presently allowed range for that ...
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ژورنال
عنوان ژورنال: The European Physical Journal C
سال: 1999
ISSN: 1434-6044,1434-6052
DOI: 10.1007/s100529800919