Final-state Polarization in Bs Decays
arXiv:0802.0897 · doi:10.1140/epjc/s10052-009-0883-8
Abstract
Certain Bs --> V_1V_2 decays (V_i is a vector meson) can be related by flavor SU(3) symmetry to corresponding Bd --> V_3V_4 decays. In this paper, we show that the final-state polarization can be predicted in the Bs decay, assuming polarization measurements of the Bd decay. This can be done within the scenario of penguin annihilation (PA), which has been suggested as an explanation of the unexpectedly large transverse polarization in B-->phi K^*. PA is used to estimate the breaking of flavor SU(3) symmetry in pairs of decays. Two of these for which PA makes a reasonably precise prediction of the size of SU(3) breaking are (Bs --> phiphi, Bd --> phi K^{0*}) and (Bs --> phi {\bar K}^{0*}, Bd --> {\bar K}^{0*} K^{0*}). The polarization measurement in the Bd decay can be used to predict the transverse polarization in the Bs decay, and will allow a testing of PA.
6 pages
References in corpus (27)
- Big-Bang nucleosynthesis (Particle Data Group mini-review)
- The Cosmological Parameters 2006
- QCD Factorization for Decays: Strong Phases and CP Violation in the Heavy Quark Limit
- QCD factorization for exclusive, non-leptonic B meson decays: General arguments and the case of heavy-light final states
- QCD factorization for B->PP and B->PV decays
- QCD Factorization in B -> pi K, pi pi Decays and Extraction of Wolfenstein Parameters
- New Results on B->pi, K, eta Decay Formfactors from Light-Cone Sum Rules
- Fat penguins and imaginary penguins in perturbative QCD
- Higher Twist Distribution Amplitudes of Vector Mesons in QCD: Formalism and Twist Three Distributions
- Final State Interactions in Hadronic B Decays
- B -> M1 M2: Factorization, Charming Penguins, Strong Phases, and Polarization
- Branching fractions, polarisation and asymmetries of B -> VV decays
- Polarization in B->VV Decays
- Twist-3 Distribution Amplitudes of K* and phi Mesons
- Rates, Polarizations, and Asymmetries in Charmless Vector-Vector B Meson Decays
- Charming Penguins Strike Back
- Measurement of Branching Fractions and Polarization in B -> phi K^{(*)} Decays
- Measurement of Polarization and Triple-Product Correlations in B -> phi K^* Decays
- Polarizations in B -> VV decays
- The Riddle of Polarization in Transitions
- Final state interactions for B => VV charmless decays
- Measurement of the B0->PhiK*0 Decay Amplitudes
- Measurements of branching fractions, polarizations, and direct CP-violation asymmetries in B --> rho K* and B --> f0(980) K* decays
- Vector-Tensor and Vector-Vector Decay Amplitude Analysis of B0->phi K*0
- Measurements of Branching Fractions and Polarization in B > K^* rho Decays
- Models for Light-Cone Meson Distribution Amplitudes
- Testing Explanations of the Polarization Puzzle