Search for direct CP violation in B to K pi, pi pi, K K, Quasi-Two-Body B decays and B to K* gamma with the BABAR detector at the PEP-II collider

TL;DR

This study searches for direct CP violation in various B meson decay modes using a large data sample from the BABAR detector, finding no evidence but setting limits on CP violation and decay rates.

Contribution

First comprehensive search for direct CP violation in multiple B decay channels with new limits established using BABAR data.

Findings

No evidence of direct CP violation in studied modes

Set 90% confidence level limits on CP violation

Established upper limit on B0 to gamma gamma decay

Abstract

A sample of 23 million B B-bar events collected with the BABAR detector at the PEP-II collider is used in a search for direct CP violation in charmless two-body B decays, quasi two-body B decays, and the radiative penguin decays B to K* gamma. No evidence for direct CP violation is found in the considered modes and 90% confidence level limits are reported. We also present a limit on the branching fraction of the decay B0 to gamma gamma.