Study of BESIII Trigger Efficiencies with the 2018 $J/\psi$ Data

TL;DR

This paper evaluates the trigger efficiencies of the BESIII detector using 2018 $J/$ data, demonstrating near-perfect efficiency with minimal uncertainties across key physics processes.

Contribution

It provides a detailed measurement of trigger efficiencies for BESIII using specific physics processes, ensuring reliable data collection for future analyses.

Findings

Trigger efficiencies approach 100% in most cases.

Uncertainties are small enough not to impact physics analyses.

Efficiencies are validated across Bhabha, dimuon, and hadronic events.

Abstract

Using a dedicated data sample taken in 2018 on the $J/\psi$ peak, we perform a detailed study of the trigger efficiencies of the BESIII detector. The efficiencies are determined from three representative physics processes, namely Bhabha-scattering, dimuon production and generic hadronic events with charged particles. The combined efficiency of all active triggers approaches $100\%$ in most cases with uncertainties small enough as not to affect most physics analyses.