Dalitz analysis of the three-body charmless decays B+=>K+Pi+Pi- and B+=>K+K+K-

TL;DR

This paper presents a Dalitz analysis of charmless three-body B+ decays, measuring branching fractions for various intermediate states and setting upper limits on others, based on a large data sample from the Belle detector.

Contribution

It provides the first detailed Dalitz analysis of B+=>K+Pi+Pi- and B+=>K+K+K- decays, including measurements of branching fractions for multiple intermediate states.

Findings

Measured branching fractions for scalar and vector intermediate states.

Set upper limits on pseudoscalar-tensor decay modes.

Reported B+ => chi_c0 K+ branching fractions in two decay channels.

Abstract

We report results on the Dalitz analysis of three-body charmless B+=>K+Pi+Pi- and B+=>K+K+K- decays based on a 140 fb$^{-1}$ data sample collected with the Belle detector. Measurements of branching fractions for quasi-two-body decays to scalar-pseudoscalar states: B+ => f0(980)K+, B+ => K*_0(1430)^0 Pi+, and to vector-pseudoscalar states: B+ => K*(892)^0 Pi+, B+ => rho(770)K+, B+ => phi(1020)K+ are presented. Upper limits on decays to some pseudoscalar-tensor final states are reported. We also report the measurement of the B+ => chi_c0 K+ branching fraction in two chi_c0 decays channels: chi_c0 => Pi+Pi- and chi_c0 => K+K-.