Dalitz Plot Study of B0 --> K+K-K0S Decays

TL;DR

This paper analyzes the decay dynamics of B0 --> K+ K- K0S using a large dataset, identifying key resonant and non-resonant contributions through Dalitz plot analysis.

Contribution

It provides the first detailed Dalitz plot analysis of B0 --> K+ K- K0S decays, highlighting the dominant phi K0S mode and non-resonant effects.

Findings

Identification of phi K0S as the main resonant mode

Observation of a significant non-resonant contribution

Set limits on additional potential resonances

Abstract

We present a study of the dynamics in B0 --> K+ K- K0S decays with approximately 230 million BBbar events collected by the BABAR detector at SLAC. We find that the Dalitz plot distribution is best parameterized with the phi K0S mode, an S-wave K+ K- resonance near 1500 MeV/c^2, and a large non-resonant contribution. We set limits on resonances not included in our model, and study models for the non-resonant contribution.