Tracking performance for long-lived particles at LHCb

TL;DR

This paper introduces a novel method to evaluate the tracking performance for long-lived particles at LHCb, focusing on particles that only partially traverse the upgraded detector, enhancing understanding of detection capabilities.

Contribution

A new data-driven approach to assess tracking efficiency for long-lived particles in the LHCb upgrade, addressing challenges of particles hitting only part of the detector.

Findings

Effective evaluation of tracking algorithms for long-lived particles.

Improved understanding of detection efficiency for particles hitting partial detector regions.

Method applicable to real data samples from the LHCb upgrade.

Abstract

The LHCb experiment is dedicated to the study of the $c-$ and $b-$hadron decays, including long-lived particles such as $K_s$ and strange baryons ($\Lambda^0$, $\Xi^-$, etc... ). These kind of particles are difficult to reconstruct by the LHCb tracking system since they escape detection in the first tracker. A new method to evaluate the performance of the different tracking algorithms for long-lived particles using real data samples has been developed. Special emphasis is laid on particles hitting only part of the tracking system of the new LHCb upgrade detector.