Measurement of hadronic cross section and preliminary results on the pion form factor using the radiative return at DAPHNE

TL;DR

This paper reports on measuring the hadronic cross section and pion form factor at DAΦNE using radiative return, providing preliminary results crucial for understanding low-energy QCD processes.

Contribution

It introduces a method to measure the pion form factor at DAΦNE via radiative return, with preliminary results based on 73 pb^{-1} of data.

Findings

Preliminary measurement of the pion form factor.

Analysis of the e+e- to pi+pi-g process.

Insights into low-energy hadronic interactions.

Abstract

In the fixed energy environment of the $e^{+}e^{-}$ collider DA$\Phi$NE, KLOE can measure the cross section of the process $e^{+}e^{-} \to$ hadrons as a function of the hadronic system energy using the radiative return. At energies below 1 GeV, $e^{+}e^{-} \to \rho \to \pi^{+}\pi^{-}$ is the dominating hadronic process. We report here on the status of the analysis for the $e^{+}e^{-} \to \ppg$ channel, which allows to obtain a preliminary measurement of the pion form factor using an integrated luminosity of $\sim73 pb^{-1}$.