Extracting Weak Phases Cleanly from Charmless 3-Body B Decays

TL;DR

This paper demonstrates a method to extract weak phases from charmless 3-body B decays using Dalitz plot analysis, overcoming previous challenges and providing preliminary gamma measurements.

Contribution

It introduces a novel approach to determine weak phases from 3-body B decays by expressing amplitudes in terms of diagrams and Dalitz plots.

Findings

Successful extraction of weak phase gamma from B -> K pi pi and B -> K Kbar K decays.

Resolution of previous difficulties in measuring CP violation in 3-body decays.

Preliminary results indicating the viability of this method.

Abstract

In the past, it was believed that one cannot obtain clean weak-phase information from the measurement of CP-violating asymmetries in 3-body B decays. Recently it was shown that this is not true -- by expressing the decay amplitudes in terms of diagrams and using Dalitz plots, one can resolve all the difficulties and cleanly extract weak phases. In this talk I describe how this is done, and present preliminary results on the measurement of gamma using the decays B -> K pi pi and B -> K Kbar K.