CP Violation in B->eta'K0 and Status of SU(3)-related Decays

TL;DR

This paper reports measurements of CP-violation parameters in B->eta'K0 decays, confirming mixing-induced CP violation with high significance, and discusses implications for SU(3)-related decay modes and theoretical expectations.

Contribution

It provides the first combined measurements from Belle and BABAR of CP-violation parameters in B->eta'K0 decays and analyzes their consistency with SU(3) symmetry predictions.

Findings

Observation of mixing-induced CP violation with >5 sigma significance.

Measurements of parameters S and C in B->eta'K0 decays.

Discussion of SU(3)-related decay modes and theoretical bounds.

Abstract

We present measurements from Belle and BABAR of the time-dependent CP-violation parameters S and C in B->eta'K0 decays. Both experiments observe mixing-induced CP violation with a significance of more than 5 standard deviations in this b-> s penguin dominated mode. We also compare with theoretical expectations and discuss the latest results for SU(3)-related decays which are useful for obtaining bounds on the expected values of S and C.