Measurement of integrated luminosities at BESIII for data samples at center-of-mass energies between 4.0 and 4.6 GeV

TL;DR

This paper reports precise measurements of integrated luminosities at BESIII for data at energies between 4.0 and 4.6 GeV, improving the accuracy and updating previous data sets with corrections for detector performance and readout errors.

Contribution

It provides the first high-precision luminosity measurements for BESIII data at these energies and updates earlier measurements with new corrections.

Findings

Luminosities measured with better than 1% precision.

Updated previous data sets with corrections for detector issues.

Enhanced accuracy of BESIII data samples for future analyses.

Abstract

The integrated luminosities of the data samples collected in the BESIII experiment in 2016--2017 at center-of-mass energies between 4.19 and 4.28 GeV are measured with a precision better than 1% by analyzing large-angle Bhabha scattering events. The integrated luminosities of the old data sets collected in 2010--2014 are updated by considering correction related to the detector performance, offsettting the effect of newly discovered readout errors in the electromagnetic calorimeter that happen haphazardly.