The perturbative proton form factor reexamined
نویسندگان
چکیده
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. email: [email protected] email: [email protected] email: [email protected] email: [email protected] 1
منابع مشابه
Comment on the paper : “ The perturbative proton form factor reexamined ” by Kundu
We point out some serious problems in the investigation of Kundu et al. which claims agreement with the existing data of the proton form factor, calculated without taking into account the intrinsic k⊥-dependence of the proton wave function. In 1993 Li [1] applied the modified factorization scheme of perturbative QCD to exclusive processes, developed in [2], to the proton form factor at large mo...
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