Speaker
Description
The pion, as the lightest meson and a quark--antiquark bound state, provides an important testing ground for understanding the transition between nonperturbative and perturbative Quantum Chromodynamics (QCD). The Jefferson Lab experiment E12-19-006 extends precision measurements of the pion form factor to $(Q^2 \approx 6~\mathrm{GeV}^2)$ and allows for measurements up to $(Q^2 \approx 8.5~\mathrm{GeV}^2)$, the highest (Q^2) achievable at Jefferson Lab. while p[revious Cornell measurements at similar (Q^2) were limited by large uncertainties and incomplete (L/T) separation.
This work focuses on the analysis of pion electroproduction data using Rosenbluth (L/T) separation techniques to extract the longitudinal virtual-photon cross section, from which the pion form factor (F_{\pi}) can be determined. The analysis includes studies of experimental and systematic uncertainties associated with the separated cross sections. Precise measurements of (F_{\pi}) at high (Q^2) provide important constraints on theoretical models such as the Vanderhaeghen--Guidal--Laget $(VGL)$ Regge model and contribute to our understanding of meson structure and QCD dynamics.