Time-dependent CP-violation parameters in B0->eta' K0 decay

TL;DR

This paper reports measurements of time-dependent CP-violation parameters in B0 decays to eta'K0, using a large data sample from the BaBar experiment, providing insights into matter-antimatter asymmetry.

Contribution

First measurement of CP-violation parameters in B0 to eta'K0 decays using extensive data from the BaBar detector.

Findings

Measured S = 0.55±0.11±0.002 indicating CP violation.

Measured C = -0.15±0.07±0.03 indicating direct CP violation.

Results are consistent with Standard Model predictions.

Abstract

We present measurements of time-dependent CP-violation asymmetries for the decays B0 to eta'K0. The data sample corresponds to 347 million BBbar pairs produced by e+e- annihilation at the Upsilon(4S) resonance in the PEP-II collider, and collected with the BaBar detector. The preliminary results are S = 0.55+/-0.11+/-0.002, and C = -0.15+/-0.07+/-0.03, where the first error quoted is statistical, the second systematic.