Nucleon Form Factors in QCD

Details Nucleon Form Factors in QCD Nucleon Form Factors in QCD

2006-04-06

arxiv.org/abs/hep-ph/0604050v2

Phys.Rev. D73 (2006) 094019

Physics

High Energy Physics

High Energy Physics - Phenomenology

30 pages, several references included

Scientific paper

10.1103/PhysRevD.73.094019

We calculate the electromagnetic and the axial form factors of the nucleon within the framework of light cone sum rules (LCSR) to leading order in QCD and including higher twist corrections. In particular we motivate a certain choice for the interpolating nucleon field. We find that a simple model of the nucleon distribution amplitudes which deviate from their asymptotic shape, but much less compared to the QCD sum rule estimates, allows one to describe the data remarkably well.

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