Measurement of Charge Asymmetries in Charmless Hadronic in B Meson Decays

TL;DR

This study measures CP-violating charge asymmetries in various charmless hadronic B meson decays, finding results consistent with no CP violation within the experimental uncertainties.

Contribution

First measurement of CP asymmetries in multiple charmless B meson decay modes using a large data sample from the CLEO detector.

Findings

Measured asymmetries are consistent with zero within uncertainties.

Statistical precision ranges from ±0.12 to ±0.25 depending on decay mode.

Results constrain possible CP violation effects in these decay channels.

Abstract

We search for CP-violating asymmetries (Acp) in the B meson decays to K+- pi-+, K+- pi0, Ks pi+-, K+- eta', and omega pi+-. Using 9.66 million Upsilon(4S) decays collected with the CLEO detector, the statistical precision on Acp is in the range of \pm 0.12 to \pm 0.25 depending on decay mode. While CP-violating asymmetries of up to \pm 0.5 are possible within the Standard Model, the measured asymmetries are consistent with zero in all five decay modes studied.