Improved radiative corrections and proton charge form factor from the Rosenbluth separation technique

TL;DR

This paper examines whether radiative correction approximations cause discrepancies in proton electric form factor measurements, finding that inaccuracies are too small to explain the observed differences.

Contribution

It introduces a simulation approach that removes common radiative correction approximations to assess their impact on form factor measurements.

Findings

Inaccuracies from standard approximations are too small to account for the discrepancy.

The simulation approach improves the accuracy of radiative correction assessments.

The discrepancy between measurement methods remains unexplained by these corrections.

Abstract

We investigate whether the apparent discrepancy between proton electric form factor from measurements using the Rosenbluth separation technique and polarization transfer method is due to the standard approximations employed in radiative correction procedures. Inaccuracies due to both the peaking approximation and the soft-photon approximation have been removed in our simulation approach. In contrast to results from (e,e'p) experiments, we find them in this case to be too small to explain the discrepancy.