ar X iv : 0 70 9 . 40 13 v 2 [ he p - ph ] 9 O ct 2 00 7 CERN - PH - TH / 2007 - 169 September 2007 STUDYING NEW PHYSICS AMPLITUDES IN
نویسنده
چکیده
A method based on flavour SU(3) is proposed for identifying and extracting New Physics (NP) amplitudes in charmless ∆S = 1 Bs decays using time-dependent CP asymmetries in these decays and in flavour SU(3) related ∆S = 0 decays. For illustration, we assume a hierarchy, ∼ 1 : λ : λ (λ = 0.2), between a dominant ∆S = 1 penguin amplitude, a NP amplitude and a Standard Model amplitude with weak phase γ. An uncertainty from SU(3) breaking corrections, reduced by using ratios of hadronic amplitudes, is further suppressed by a factor λ. We discuss examples for pairs of decays into two neutral vector mesons, Bs → φφ, Bs → φK̄ and Bs → KK̄, B → KK̄, where the magnitude of the NP amplitude, its weak and strong phases can be determined. PACS Categories: 13.25.Hw, 11.30.Er, 12.15.Ji, 14.40.Nd
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∗Speaker. †We (S.D. and P.U.) thank the Galileo Galilei Institute for Theoretical Physics in Florence for the hospitality and the INFN for partial support during the completion of this work. P.U. is supported as Heisenberg Fellow of the Deutsche Forschungsgemeinschaft DFG. This work is supported in part by the European Community’s Marie-Curie Research Training Network HEPTOOLS under contract MR...
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