Dalitz Analysis of B->K+pi+pi- and B->K+K+pi-

TL;DR

This paper presents a detailed Dalitz analysis of specific charmless B meson 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 comprehensive Dalitz analysis of B->K+pi+pi- and B->K+K+K- decays, including measurements of branching fractions for multiple intermediate states and new measurements of B-> chi_c K+ decays.

Findings

Measured branching fractions for several scalar and vector intermediate states.

Set upper limits on pseudoscalar-tensor decay modes.

Reported new measurements of B-> chi_c K+ branching fractions.

Abstract

We report results of the Dalitz analysis of the three-body charmless B->K+pi+pi- and B->K+K+K- decays based on a 140fb^{-1} data sample collected with the Belle detector. Measurements of branching fractions for quasi-two-body decays to scalar-pseudoscalar states: B-> f_0(980)K^+, B-> K^*_0(1430)^0 pi+, and to vector-pseudoscalar states: B-> K^*(892)^0 pi+, B-> rho^0 K+, B-> phi K+ are presented. Upper limits on decays to some pseudoscalar-tensor final states are reported. We also report the new measurement of the B-> chi_c K+ branching fraction in two chi_c decay channels: chi_c-> pi+ pi- and chi_c-> K+K-.