Measurements of electron-proton elastic cross sections for0.4<Q2<5.5(GeV∕c)2

We report on precision measurements of the elastic cross section for electron-proton scattering performed in Hall C at Jefferson Lab. The measurements were made at 28 distinct kinematic settings covering a range in momentum transfer of $0.4<Q^2<5.5{(\mathrm{GeV}∕c)}^2$. These measurements represent a significant contribution to the world’s cross section data set in the $Q^2$ range, where a large discrepancy currently exists between the ratio of electric to magnetic proton form factors extracted from previous cross section measurements and that recently measured via polarization transfer in Hall A at Jefferson Lab. This data set shows good agreement with previous cross section measurements, indicating that if a heretofore unknown systematic error does exist in the cross section measurements, then it is intrinsic to all such measurements.