Measurements of time dependent CP asymmetry in $B \to VV$ decays with BELLE

TL;DR

This paper reports on measurements of time-dependent CP asymmetry in B meson decays to vector-vector final states using Belle detector data, advancing understanding of CP violation.

Contribution

It presents the first time-dependent angular analysis of B to J/psi K* decays and summarizes status of other B to VV decay analyses.

Findings

Observation of CP asymmetry in B to J/psi K* decays

Status update on time-independent analyses of other B to VV decays

Methodological advancements in angular analysis techniques

Abstract

A study of CP violation in $B\to J/\psi K^*(K_S^0\pi^0)$ decays by time dependent angular analysis is discussed. Status of time independent analyses for other $B\to VV$ decays is also reported. The data used for the analyses are taken with the Belle detector at KEK.