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

Authors :
Rosini, Francesco
Pacetti, Simone
Shekhovtsova, Olga
Tomasi-Gustafsson, Egle
Source :
European Physical Journal A -- Hadrons & Nuclei; Jul2024, Vol. 60 Issue 7, p1-9, 9p
Publication Year :
2024

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 Q 2 -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. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
14346001
Volume :
60
Issue :
7
Database :
Complementary Index
Journal :
European Physical Journal A -- Hadrons & Nuclei
Publication Type :
Academic Journal
Accession number :
179346342
Full Text :
https://doi.org/10.1140/epja/s10050-024-01365-9