Global SU (3) /U (3) flavor symmetry analysis for B →pP with η-η′ Mixing
Journal
Physical Review D - Particles, Fields, Gravitation and Cosmology
Journal Volume
93
Journal Issue
11
Date Issued
2016
Author(s)
Abstract
A large number of new experimental data on B decay into two light pesudoscalar (P) mesons have been collected by the LHCb collaboration. Besides confirming information on Bu,d→PP decays obtained earlier by B-factories at KEK and SLAC, new information on Bs→PP and also more decay modes with P being η or η′ have been obtained. Using these new data, we perform a global fit for B→PP to determine decay amplitudes in the framework of SU(3)/U(3) flavor symmetry. We find that SU(3) flavor symmetry can explain data well. The annihilation amplitudes are found to be small as expected. Several CP violating relations predicted by SU(3) flavor symmetry are in good agreement with data. Current available data can give constraints on the amplitudes which induce P=η,η′ decays in the framework of U(3) flavor symmetry, and can also determine the η-η′ mixing angle θ with θ=(-18.4±1.2)°. Several B→PP decay modes which have not been measured are predicted with branching ratios accessible at the LHCb. These decays can provide further tests for the framework of SU(3)/U(3) flavor symmetry for B decays.
Type
journal article