Studying new physics amplitudes in charmless Bs decays
Abstract
A method based on flavour SU(3) is proposed for identifying and extracting New Physics (NP) amplitudes in charmless ΔS = 1Bs decays using time-dependent CP asymmetries in these decays and in flavour SU(3) related ΔS = 0 decays. For illustration, we assume a hierarchy, ∼ 1 : λ :λ2 (λ = 0.2), between a dominant ΔS = 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 → ϕKbar∗0 and Bs →K∗0Kbar∗0 ,B0 →K∗0Kbar∗0, where the magnitude of the NP amplitude, its weak and strong phases can be determined.
- Publication:
-
Physics Letters B
- Pub Date:
- February 2008
- DOI:
- 10.1016/j.physletb.2007.12.028
- arXiv:
- arXiv:0709.4013
- Bibcode:
- 2008PhLB..660..212F
- Keywords:
-
- 13.25.Hw;
- 11.30.Er;
- 12.15.Ji;
- 14.40.Nd;
- Decays of bottom mesons;
- Charge conjugation parity time reversal and other discrete symmetries;
- Applications of electroweak models to specific processes;
- Bottom mesons;
- High Energy Physics - Phenomenology;
- High Energy Physics - Experiment
- E-Print:
- typo corrected, reference added, submitted to Physics Letters B