The perturbative proton form factor reexamined

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چکیده

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The perturbative proton form factor reexamined

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 ...

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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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Reexamination of the perturbative pion form factor with Sudakov suppression.

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ژورنال

عنوان ژورنال: The European Physical Journal C

سال: 1999

ISSN: 1434-6044

DOI: 10.1007/s100520050499