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The perturbative proton form factor reexamined

  • Bijoy Kundu
  • Hsiang-nan Li
  • Jim Samuelsson
  • Pankaj Jain
Theoretical physics

Abstract.

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 re-summation are carefully chosen such that the soft divergences from large coupling constants are diminished and perturbative QCD predictions are stabilized. We find that the King–Sachrajda model for the proton wave function leads to results which are in better agreement with experimental data than those from the Chernyak–Zhitnitsky wave function.

Keywords

Wave Function Form Factor Proton Form Evolution Scale Factorization Theorem 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 1999

Authors and Affiliations

  • Bijoy Kundu
    • 1
  • Hsiang-nan Li
    • 2
  • Jim Samuelsson
    • 1
  • Pankaj Jain
    • 1
  1. 1. Department of Physics, IIT Kanpur, Kanpur-208 016, India IN
  2. 2. Department of Physics, National Cheng-Kung University Tainan, Taiwan, P.R. China TW

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