A simple method to determine charge-dependent curvature biases in track reconstruction in hadron collider experiments

TL;DR

This paper introduces a data-driven technique using Z boson decays to correct charge-dependent curvature biases in spectrometer experiments, enhancing measurement precision in hadron collider detectors.

Contribution

A novel method leveraging Z → μ+μ− decays for data-driven correction of charge-dependent biases in spectrometer track reconstruction.

Findings

Method reliably controls detector mis-alignment effects.

Applicable to precision electroweak measurements.

Works with simplified detector models.

Abstract

A new data-driven method, using $Z \rightarrow \mu^+ \mu^-$ decays, is proposed to correct for charge-dependent curvature biases in spectrometer experiments at hadron colliders. The method is studied assuming a detector with a "forward-spectrometer" geometry similar to that of the LHCb experiment, and is shown to reliably control several simplified detector mis-alignment configurations. The applicability of the method for use in measurements of precision electroweak observables is evaluated.