Flavor SU(3) analysis of charmless B->PP decays

TL;DR

This paper performs a comprehensive SU(3) flavor symmetry analysis of charmless B meson decays into two pseudoscalars, constraining CKM parameters and exploring potential new physics effects.

Contribution

It introduces a global fitting method that independently constrains CKM parameters and predicts decay observables, considering various SU(3) breaking schemes and new physics scenarios.

Findings

Constraints on the CKM unitarity triangle from B decays

Predictions for branching ratios and CP asymmetries in B->PP decays

Discussion on possible new physics contributions to K pi decays

Abstract

We perform a global fits to charmless $B \to PP$ decays which independently constrain the $(\bar\rho,\bar\eta)$ vertex of the unitarity triangle. The fitted amplitudes and phase are used to predict the branching ratios and CP asymmetries of all decay modes, including those of the $B_s$ system. Different schemes of SU(3) breaking in decay amplitude sizes are analyzed. The possibility of having a new physics contribution to $K \pi$ decays is also discussed.