Amplitude Analysis of B -> pi pi pi and B -> K pi pi

TL;DR

This paper reports a Dalitz-plot analysis of charmless B decays to pi pi pi and K pi pi, measuring branching fractions and resonance contributions using data from the BABAR experiment.

Contribution

It provides the first detailed Dalitz-plot analysis of these decay modes with measured branching fractions and resonance parameters.

Findings

Branching fraction for B -> pi pi pi: (16.2 +- 2.1 +- 1.3) x 10^-6

Branching fraction for B -> K pi pi: (61.4 +- 2.4 +- 4.5) x 10^-6

Resonance fit fractions and phases are determined

Abstract

We present preliminary results of a maximum-likelihood Dalitz-plot analysis of the charmless hadronic B decays to the final states pi pi pi and K pi pi from data corresponding to an integrated on-resonance luminosity of 166 fb^-1 recorded by the BABAR experiment at the SLAC PEP-II asymmetric-energy B Factory. We measure the total branching fractions B(B -> pi pi pi) = (16.2 +- 2.1 +- 1.3) x 10^-6 and B(B -> K pi pi) = (61.4 +- 2.4 +- 4.5) x 10^-6, and provide fit fractions and phases for intermediate resonance states.