Exclusive Processes at Intermediate Energy, Quark-Hadron Duality and the Transition to Perturbative QCD

Details Exclusive Processes at Intermediate Energy, Quark-Hadron Duality and the Transition to Perturbative QCD Exclusive Processes at Intermediate Energy, Quark-Hadron Duality and the Transition to Perturbative QCD

1998-05-20

arxiv.org/abs/hep-ph/9805406v3

JHEP 9807 (1998) 008

Physics

High Energy Physics

High Energy Physics - Phenomenology

49 pages, 18 figures. to appear on Journ of High Energy Phys, JHEP. to appear in Journal of High Energy Physics, JHEP

Scientific paper

10.1088/1126-6708/1998/07/008

Experiments at CEBAF will scan the intermediate-energy region of the QCD dynamics for the nucleon form factors and for Compton Scattering. These experiments will definitely clarify the role of resummed perturbation theory and of quark-hadron duality (QCD sum rules) in this regime. With this perspective in mind, we review the factorization theorem of perturbative QCD for exclusive processes at intermediate energy scales, which embodies the transverse degrees of freedom of a parton and the Sudakov resummation of the corresponding large logarithms. We concentrate on the pion and proton electromagnetic form factors and on pion Compton scattering. New ingredients, such as the evolution of the pion wave function and the complete two-loop expression of the Sudakov factor, are included. The sensitivity of our predictions to the infrared cutoff for the Sudakov evolution is discussed. We also elaborate on QCD sum rule methods for Compton Scattering, which provide an alternative description of this process. We show that, by comparing the local duality analysis to resummed perturbation theory, it is possible to describe the transition of exclusive processes to perturbative QCD.

Affiliated with

Also associated with

No associations

Rating

Exclusive Processes at Intermediate Energy, Quark-Hadron Duality and the Transition to Perturbative QCD does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Exclusive Processes at Intermediate Energy, Quark-Hadron Duality and the Transition to Perturbative QCD, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Exclusive Processes at Intermediate Energy, Quark-Hadron Duality and the Transition to Perturbative QCD will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-86163