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- W2011826138 abstract "We examine new-physics (NP) effects in B decays with large b -> s penguin amplitudes. Decays involving b -> d penguins are assumed to be unaffected. We consider a model-independent parametrization of such NP. We argue that NP strong phases are negligible relative to those of the standard model. This allows us to describe the NP effects in terms of a small number of effective amplitudes A_NP^q (q=u,d,s,c) and corresponding weak phases Phi_q. We then consider pairs of neutral B decays which are related by flavour SU(3) in the standard model. One receives a large b -> s penguin component and has a NP contribution; the other has a b -> d penguin amplitude and is unaffected by NP. The time-dependent measurement of these two decays allows the {it measurement} of the NP parameters A_NP^q and Phi_q. The knowledge of these parameters allows us to rule out many NP models and thus partially identify the new physics." @default.
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- W2011826138 date "2004-08-01" @default.
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- W2011826138 title "Measuring new-physics parameters in B penguin decays" @default.
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- W2011826138 doi "https://doi.org/10.1016/j.physletb.2004.06.069" @default.
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