# Quark charge identification for $e^{+}e^{-}$ to $q\bar{q}$ study

## TL;DR

This paper investigates quark charge identification in electron-positron collisions to improve electroweak measurements, analyzing decay modes of heavy hadrons using full simulation data.

## Contribution

It provides detailed progress on quark charge ID performance and explores decay mode-specific improvements for the first time.

## Key findings

- Charge ID performance varies by decay mode
- Potential improvements identified for heavy hadron decay channels
- Simulation results inform future detector and analysis strategies

## Abstract

The process $e^{+}e^{-} \to q\bar{q}$ plays an important role in electroweak precision measurements. We are studying this process with ILD full simulation. The key for the reconstruction of the quark pair final states is quark charge identification (ID). We report the progress of charge ID study in detail. In particular, we investigate the performance of the charge ID for each decay mode of the heavy hadrons to know the possibilities of improvements of the charge ID.