Complete NLO QED radiative corrections to elastic lepton-proton scattering including TPE contributions with momentum-dependent form factors and numerical impact assessment.
The electric and magnetic form factors of the proton
5 Pith papers cite this work. Polarity classification is still indexing.
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abstract
The paper describes a precise measurement of electron scattering off the proton at momentum transfers of $0.003 \lesssim Q^2 \lesssim 1$\ GeV$^2$. The average point-to-point error of the cross sections in this experiment is $\sim$ 0.37%. These data are used for a coherent new analysis together with all world data of unpolarized and polarized electron scattering from the very smallest to the highest momentum transfers so far measured. The extracted electric and magnetic form factors provide new insight into their exact shape, deviating from the classical dipole form, and of structure on top of this gross shape. The data reaching very low $Q^2$ values are used for a new determination of the electric and magnetic radii. An empirical determination of the Two-Photon-Exchange (TPE) correction is presented. The implications of this correction on the radii and the question of a directly visible signal of the pion cloud are addressed.
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Nucleon EM form factors computed in instanton vacuum model with parameters fixed by saddle-point equation yield proton charge radius 0.841 fm matching muonic hydrogen and good agreement on Q2 dependence of ratios.
Radiative corrections applied to MINERvA antineutrino data yield updated values for the nucleon axial-vector form factor G_A and axial radius.
Derives a DPS pocket formula and effective cross section expression for dissociative J/ψ + dimuon production in Ap ultraperipheral collisions, with predictions at LHC and FCC energies.
Fitting dilepton production data in pp collisions with a dipole form factor model yields Λ² = 0.465 ± 0.056 GeV² (rp = 1.002 ± 0.038 fm), showing sensitivity to proton radius at high masses and forward rapidities but not resolving the puzzle.
citing papers explorer
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Radiative Corrections to Elastic Lepton-Proton Scattering with Focus on Two-Photon-Exchange Diagrams
Complete NLO QED radiative corrections to elastic lepton-proton scattering including TPE contributions with momentum-dependent form factors and numerical impact assessment.
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Electromagnetic form factors of the nucleon from the instanton vacuum
Nucleon EM form factors computed in instanton vacuum model with parameters fixed by saddle-point equation yield proton charge radius 0.841 fm matching muonic hydrogen and good agreement on Q2 dependence of ratios.
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Nucleon axial-vector form factor and radius from radiatively-corrected antineutrino scattering data
Radiative corrections applied to MINERvA antineutrino data yield updated values for the nucleon axial-vector form factor G_A and axial radius.
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Dissociative associated $J/\psi$ and dimuon production in Ap ultraperipheral collisions via double parton scattering
Derives a DPS pocket formula and effective cross section expression for dissociative J/ψ + dimuon production in Ap ultraperipheral collisions, with predictions at LHC and FCC energies.
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Sensitivity of the photon-induced processes to the proton radius
Fitting dilepton production data in pp collisions with a dipole form factor model yields Λ² = 0.465 ± 0.056 GeV² (rp = 1.002 ± 0.038 fm), showing sensitivity to proton radius at high masses and forward rapidities but not resolving the puzzle.