Microscopic parametrization of the near threshold oscillations of the nucleon time-like effective electromagnetic form factors

Abstract

We present an analysis of the recent near threshold BESIII data for the nucleon time-like effective form factors. The damped oscillation emerging from the subtraction of the dipole formula is treated in non-perturbative-QCD, making use of the light cone distribution amplitudes expansion. Non-perturbative effects are accounted for by considering Q2-dependent coefficients in such expansions, whose free parameters are determined by fitting to the proton and neutron data. Possible implications and future analysis have been discussed.

8 pages, 4 figures

References in corpus (7)

• New Features in the Electromagnetic Structure of the Neutron
• Periodic interference structures in the time-like proton form factor
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• Study of the process $e^{+}{e}^{-}\to p\bar{p}$ via initial state radiation at BESIII
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Cited by in corpus (1)

• Baryon Form Factors