Studies of the tracking and identification efficiencies of electrons and positrons at BESIII

2025/09/12 by Xinyu Chai, Mengzhen Wang, M. Wang +9 · 1 citation
Engineering · Physics and Astronomy · #Annihilation #Detector #Electron #Identification (biology) #Muon and positron interactions and applications #Particle Detector Development and Performance #Particle identification #Particle physics theoretical and experimental studies #Positron #Radiative transfer #Tracking (education)

paper · pdf · doi:10.1007/s41605-025-00609-6

openalex created_date 2025/10/15 · openalex publication_date 2025/10/15 · openalex updated_date 2026/07/25

Abstract

The efficiencies for electron and positron tracking and identification in the BESIII experiment are investigated with the radiative Bhabha process e⁺e^-→ e⁺e^-γ from the data samples collected at the center-of-mass energies of 3.08 GeV and 3.097 GeV. The relative differences between data and MC associated with tracking and identification efficiencies of electrons and positrons, as well as the corresponding correction factors are determined. It turns out the relative differences of tracking efficiency and particle identification efficiency after correction are mostly less than 0.5% for transverse momenta p_T>0.4 GeV and for the entire momentum region, respectively.

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