Charmless B Decays from BABAR (B0 --> K*0 gamma and B0 --> pi+pi-,K+pi-,K+K-)

TL;DR

This paper reports preliminary results from the BABAR experiment on charmless B decays, including electromagnetic penguin decay B0 to K*0 gamma and two-body decays to pions and kaons, based on 21 fb^{-1} of data.

Contribution

First-year BABAR data analysis providing initial measurements of charmless B decays involving penguin and tree diagrams.

Findings

Observation of B0 to K*0 gamma decay

Measurements of B0 to h+h'- decay modes

First data-based insights into charmless B decay processes

Abstract

The BABAR experiment has completed its first year of data-taking during which 21 $fb^{-1}$ of data were accumulated. We present preliminary results on two types of charmless B decays based on this data sample. The first, $B^0 \to K^{*0}\gamma$, is a so-called electromagnetic penguin. And the second, $B^0 \to h^+h^{'-}$, where $h^{(')}$ can be either a pion or kaon, can come from either penguin diagrams or Cabibbo suppressed tree diagrams.