W Charge Asymmetry Measurement in CDF Run 2

TL;DR

This paper reports on the measurement of W boson charge asymmetry at Fermilab's CDF using early Run 2 data, introducing a new tracking technique that enhances electron charge determination accuracy.

Contribution

A novel combined calorimeter and silicon detector tracking method improves electron charge identification for W asymmetry analysis.

Findings

Enhanced charge determination accuracy for forward electrons.

Quantified sensitivity of W charge asymmetry measurement with new technique.

Improved understanding of W production asymmetry in proton-antiproton collisions.

Abstract

We present the status of the forward-backward charge asymmetry measurement for W boson production using early Run 2 data collected with the Collider Detector at Fermilab (CDF). Tracking for forward electrons is a critical component of this measurement, and we describe a new technique which combines the position and energy measurements from the calorimeter with position measurements in the silicon detector to provide tracking and charge determination for electron candidates. The performance of this algorithm is described and the sensitivity for the W charge asymmetry measurement with Run 2 data is quantified.