The perturbative proton form factor reexamined

Details The perturbative proton form factor reexamined The perturbative proton form factor reexamined

1998-06-19

arxiv.org/abs/hep-ph/9806419v1

Eur.Phys.J.C8:637-642,1999

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages latex, 3 figures all included in the uuencoded file; submitted to Physics Letters B (1998)

Scientific paper

10.1007/s100529900004

We recalculate the proton Dirac form factor based on the perturbative QCD factorization theorem which includes Sudakov suppression. The evolution scale of the proton wave functions and the infrared cutoffs for the Sudakov resummation are carefully chosen, such that the soft divergences from large coupling constants are diminished and perturbative QCD predictions are stablized. We find that the King-Sachrajda model for the proton wave function leads to results which are in better agreement with experimental data compared to the Chernyak-Zhitnitsky wave function.

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