The Proton Electromagnetic Form Factor $F_2$ and Quark Orbital Angular Momentum

Details The Proton Electromagnetic Form Factor $F_2$ and Quark Orbital Angular Momentum The Proton Electromagnetic Form Factor $F_2$ and Quark Orbital Angular Momentum

2003-06-21

arxiv.org/abs/hep-ph/0306194v1

Pramana61:987-992,2003

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages, 2 figures. To appear in Proceedings of the Workshop QCD 2002, IIT Kanpur, 18-22 November (2002)

Scientific paper

10.1007/BF02704468

We analyze the proton electromagnetic form factor ratio $R(Q^{2})=QF_2(Q^{2})/F_1(Q^{2})$ as a function of momentum transfer $Q^{2}$ within perturbative QCD. We find that the prediction for $R(Q^{2})$ at large momentum transfer $Q$ depends on the exclusive quark wave functions, which are unknown. For a wide range of wave functions we find that $ QF_2/F_1 \sim\ const$ at large momentum transfer, in agreement with recent JLAB data.

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