High-statistics measurement of the pion form factor in the rho-meson energy range with the CMD-2 detector

TL;DR

This paper reports a high-precision measurement of the pion form factor in the rho-meson energy range using CMD-2 detector data, significantly increasing the data sample size and reducing systematic uncertainties.

Contribution

It provides the most precise measurement to date of the pion form factor in the specified energy range, with improved data quality and reduced systematic errors.

Findings

Systematic uncertainty reduced to 0.8%

Data sample increased fivefold compared to previous measurement

Enhanced precision in pion form factor measurement

Abstract

We present a measurement of the pion form factor based on e+e- annihilation data from the CMD-2 detector in the energy range 0.6<sqrt(s)<1.0 GeV with a systematic uncertainty of 0.8%. A data sample is five times larger than that used in our previous measurement.