Study of the electron trigger efficiency of the CMS Experiment using test beam data

TL;DR

This paper evaluates the electron trigger efficiency of the CMS experiment's L1 trigger algorithm using test beam data, demonstrating high efficiency and effective hadron rejection across various energies.

Contribution

It provides a detailed analysis of the L1 electron trigger performance with test beam data, including efficiency and isolation effects, for different beam energies.

Findings

Achieves over 98% efficiency for electrons between 15 and 100 GeV.

Rejects more than 93% of charged hadrons up to 100 GeV.

Demonstrates the robustness of the L1 trigger algorithm across energies.

Abstract

A study of the electron identification and selection efficiency of the L1 Trigger algorithm has been performed using the combined ECAL/HCAL test beam data. A detailed discussion of the electron isolation and its impact on the selection efficiency is presented. The L1 electron algorithm is studied for different beam energies and the results indicate that efficiencies of 98% or more can be achieved for electrons with energies between 15 and 100 GeV. The fraction of charged hadrons with energies from 3 up to 100 GeV rejected by the L1 electron trigger algorithm is estimated to be larger than 93%.