Measurements of the electric and magnetic form factors of the neutron for time-like momentum transfer
BESIII Collaboration, M. Ablikim, M. N. Achasov, P. Adlarson et autres
We present the first measurements of the electric and magnetic form factors of the neutron in the time-like (positive $q^2$) region as function of four-momentum transfer. We explored the differential cross sections of the reaction $e^+e^- \rightarrow \bar{n}n$ with data collected with …