Neutron magnetic form factor at very high momentum transfer (16 ro 18 GeV^2)

The recently conducted JLab Hall A experiment E12-09-019, using the SBS spectrometer, measured the GMn nucleon Form Factor for momentum transfers up to 13.5 GeV^2.

A combination of GMn and GMp data at such high Q^2 will allow us to do a flavor decomposition of the Dirac nucleon form factor F1 and extract the ratio F1_d / F1_u, which was surprisingly predicted to be close to zero in some models. The SBS apparatus allows us to get data for even high momentum transfer, up to 18 GeV^2. We are planning to submit at experiment to the upcoming JLab PAC in 2025 to perform such a measurement for GMn, using the SBS spectrometer in the Hall C at JLab.