New method of particle identification with tracker detectors

TL;DR

This paper introduces a novel particle identification method using tracker detectors that relies on the global chi value from track fitting, leveraging detector material knowledge and physics of scattering, independent of energy deposition methods.

Contribution

The paper presents a new particle identification technique based on track fitting chi values, offering an alternative to traditional energy deposition methods in collider experiments.

Findings

Demonstrated effectiveness in LHC experiments

Independent of energy deposition measurements

Utilizes physics of multiple scattering and energy loss

Abstract

Tracker detectors can be used to identify charged particles based on their global chi value obtained during track fitting with the Kalman filter. This approach builds upon the knowledge of detector material and local position resolution, using the known physics of multiple scattering and energy loss. The proposed method is independent of the traditional way of identification using deposited energy. The performance for present LHC experiments is demonstrated.