Charmless B decays into three charged track final states

TL;DR

This study measures branching fractions of specific charmless B+ decays into three charged tracks using Belle data, providing evidence for scalar resonance production in these processes.

Contribution

First measurement of branching fractions for B+ --> K+pi-pi+ and K+K-K+ decays, with evidence for scalar resonance involvement in charmless B decays.

Findings

Br(B+ --> K+pi-pi+) = (64.8+-10.0+-7.0) x 10^-6

Br(B+ --> K+K-K+) = (36.5+-6.1+-5.5) x 10^-6

Evidence for scalar resonance production in charmless B decays

Abstract

Using a data sample of 10.5 1/fb collected by the Belle detector, three-body charmless decays B+ --> K+h+h- have been studied. The following branching fractions have been obtained: Br(B+ --> K+pi-pi+) = (64.8+-10.0+-7.0) x 10**-6 and Br(B+ --> K+K-K+) = (36.5+-6.1+-5.5) x 10**-6. The upper limits for other combinations of charged kaons and pions have been placed. Analysis of the intermediate two-body states gives evidence for production of scalar resonances in charmless B decays.