# Measurement of branching fraction and final-state asymmetry for the $\bar{B}^{0}\to K^{0}_{S}K^{\mp}\pi^{\pm}$ decay

## TL;DR

This paper reports a precise measurement of the decay rate and asymmetry for the $ar{B}^{0} o K^{0}_{S}K^{
p}\pi^{
p}$ decay, revealing potential intermediate structures, based on extensive data from the Belle experiment.

## Contribution

First measurement of the branching fraction and final-state asymmetry for this decay mode using Belle data, with insights into decay dynamics and possible intermediate resonances.

## Key findings

- Branching fraction of (3.60±0.33±0.15)×10⁻⁶.
- Final-state asymmetry of -8.5±8.9±0.2%.
- Hints of peaking structures in differential distributions.

## Abstract

We report a measurement of the branching fraction and final-state asymmetry for the $\bar{B}^{0}\to K^{0}_{S}K^{\mp}\pi^{\pm}$ decays. The analysis is based on a data sample of 711 $\rm{fb}^{-1}$ collected at the $\Upsilon(4S)$ resonance with the Belle detector at the KEKB asymmetric-energy $e^{+}e^{-}$ collider. We obtain a branching fraction of $(3.60\pm0.33\pm0.15)\times10^{-6}$ and a final-state asymmetry of $(-8.5\pm8.9\pm0.2)\%$, where the first uncertainties are statistical and the second are systematic. Hints of peaking structures are seen in the differential branching fractions measured as functions of Dalitz variables.