Final R-value results from 2-5 GeV from BES and QCD test with R scan data
W.B. Yan, W.G. Li, Z.G. Zhao
TL;DR
This paper presents final measurements of the R-value in the 2-5 GeV energy range using BESII at BEPC, including inclusive momentum spectra and binomial moments, contributing to QCD tests and particle physics understanding.
Contribution
It provides the final R-value results and momentum spectra measurements in the 2-5 GeV range, with upgraded detector data and preliminary spectral analysis.
Findings
Final R-value measurements in 2-5 GeV range
Inclusive momentum spectra at multiple energies
Second binomial moment measurements
Abstract
Final results of the measurement of in the energy region from 2 to 5 GeV with the upgraded Beijing Spectrometer (BESII) at the Beijing Electron Positron Collider (BEPC) are presented. Preliminary results of the inclusive momentum spectra and second binomial moment measured with the scan data at 2.2, 2.6, 3.0, 3.2, 4.6 and 4.8 GeV are reported.
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