Current Results of the PRad Experiment at JLab

The latest measurements of the proton radius through muonic hydrogen Lamb shift show a discrepancy of about $7\sigma$ from a global analysis of standard hydrogen Lamb shift and elastic $ep$-scattering. In order to understand this \textit{proton radius puzzle}, the PRad experiment, that was designed through an independent method, successfully performed in June 2016, taking elastic $ep$ and M{\o}ller-scattering data with rich statistics in a wide $Q^2$ range including very low momentum transfer ($Q^2 \in [10^{-4},10^{-1}]$~GeV$^2$) with very accurate angle and energy measurements to minimize the systematic uncertainties to achieve a sub-percent precision. % After briefly reminding the framework around this \textit{proton radius puzzle} and how the specific setup of the PRad experiment was designed to improve the previous measurements on elastic $ep$-scattering cross-sections, using a high efficiency and high resolution calorimeter (HyCal) and a high resolution GEM detector, the presentation will focus on the data analysis and the extraction of $ep$ scattering cross-section normalized by the well known M{\o}ller cross-section, to finally show the latest physics results from the 2.2 GeV data.