Proton electromagnetic form factor and radius extracted from elastic pp scattering at √s ≈ 7, 8, and 13 TeV using the Chou-Yang model

Chou-Yang model has been used to obtain the electromagnetic form factor and the root mean square (rms) radius of the proton, using experimental data for proton-proton elastic scattering at √s ≈ 7, 8, and 13 TeV. The differential cross-section data at low squared four-momentum transfer ∣t∣ is fitted to a single exponential function to extract the form factor at the aforementioned center of mass energies. Extracted electromagnetic form factors are used for the prediction of rms radius of the proton. A comparison of electromagnetic form factor and rms charge radius at the different centers of mass energies truly reflects the fact that our results agree well with the experiment and theory. Predicted values of rms radius of the proton confirm its energy-independent nature.