Speaker
Description
The nucleon electromagnetic form factors (EMFFs) are among the most basic observables sensitive to the nucleon's internal structure. However, aside from $G_M^p$, high-precision data for the nucleon EMFFs at high-Q$^2$ are scarce due to the challenges associated with such measurements. To address this, the Super BigBite Spectrometer (SBS) collaboration is currently conducting a series of experiments in Jefferson Lab's experimental Hall A to extend the high-precision measurements of the remaining nucleon EMFFs up to or beyond Q$^2=10$ (GeV/c)$^2$. The first of these experiments, SBS-GMn (E12-09-019), was completed during the October 2021 to February 2022 run period, aiming to extend the high-precision measurements of the neutron magnetic form factor ($G_M^n$) in the Q$^2$ range of 4 to 13.6 (GeV/c)$^2$ using the ``ratio" method. In this approach, systematic errors are greatly reduced by extracting $G_M^n$ from the ratio of neutron-coincident ($D(e,e'n)$) to proton-coincident ($D(e,e'p)$) quasi-elastic electron scattering from deuteron. In this talk, I will provide an overview of the SBS-GMn experiment, focusing on the physics analysis methodology, and conclude by presenting preliminary results.
