sin(2beta): Status and Prospects

TL;DR

This paper reviews the current status and future prospects of measuring sin(2beta), a key parameter indicating CP violation in the B meson system, highlighting experimental results and potential for new physics insights.

Contribution

It provides a comprehensive overview of sin(2beta) measurements from BaBar and Belle, including novel modes sensitive to physics beyond the Standard Model.

Findings

Precise measurements of sin(2beta) from B to charmonium K0_{S,L}

Observation of CP violation in the B system

Potential sensitivity of B to phi KS to new physics

Abstract

An overview of the observation of CP violation in the neutral B system, and the measurements of the CP violating asymmetry sin(2beta) with B to charmonium K^0_{S,L} events, performed by the BaBar and Belle experiments at the SLAC and KEK B factories is given. In addition, the measurements of sin(2beta) with several other modes are described, including B to phi KS, which, as the leading contribution is from a loop diagram, could be sensitive to physics beyond the Standard Model.