Extracting the Bs - anti-Bs mixing angle from B--> VV decays and comments on the puzzling B--> K* l+l- decay

TL;DR

This paper proposes three methods to determine the Bs mixing phase using B→ VV decays, employing a novel combined QCD-Factorisation and Flavor Symmetry approach, and comments on recent Babar results for B→ K* l+l- decays.

Contribution

It introduces a new combined QCD-Factorisation and Flavor Symmetry method for analyzing B→ VV decays to extract the Bs mixing phase.

Findings

Three strategies for extracting phi_s are discussed.

The framework combines QCD-Factorisation with Flavor Symmetry.

Comments on recent Babar results for B→ K* l+l- are included.

Abstract

Three different strategies to extract the weak mixing phase phi_s of the Bs system using B--> VV decays (Bs--> K* anti-K*, Bs--> phi anti-K* and Bs--> phi phi) are discussed. Those penguin-mediated decays are computed in the framework of a new combined QCD-Factorisation/Flavour Symmetry Method. Also some comments on the recent interesting results found by Babar concerning the decay B--> K* l+l- are included.