Identification of Long-lived Charged Particles using Time-Of-Flight Systems at the Upgraded LHC detectors

TL;DR

This paper explores how picosecond timing detectors at the upgraded LHC can significantly enhance the detection and identification of long-lived charged particles, improving sensitivity by up to ten times.

Contribution

It introduces algorithms for mass reconstruction and particle identification using time-of-flight data, demonstrating improved detection sensitivity at the HL-LHC.

Findings

Sensitivity improves up to tenfold with better timing resolution.

Algorithms enable effective mass reconstruction of long-lived charged particles.

Enhanced detection capabilities for heavy long-lived particles at the HL-LHC.

Abstract

We study the impact of picosecond precision timing detection systems on the LHC experiments' long-lived particle search program during the HL-LHC era. We develop algorithms that allow us to reconstruct the mass of such charged particles and perform particle identification using the time-of-flight measurement. We investigate the reach for benchmark scenarios as a function of the timing resolution, and find sensitivity improvement of up to a factor of ten, depending on the new heavy particle mass.