QCD Sum Rule and Perturbative QCD Approaches to Pion Compton Scattering
High Energy Physics - Phenomenology
2010-11-01 v1
Abstract
We compare two approaches to the description of pion Compton scattering at moderate momentum transfer, one being based on local duality QCD sum rules for the invariant amplitudes of the process, which have been derived recently, and the other on the modified factorization formula with Sudakov effects included. We find that perturbative QCD predictions are dominant over those from QCD sum rules only for the scattering angle greater than 90.
Cite
@article{arxiv.hep-ph/9302231,
title = {QCD Sum Rule and Perturbative QCD Approaches to Pion Compton Scattering},
author = {Claudio Coriano' and Hsiang-nan Li},
journal= {arXiv preprint arXiv:hep-ph/9302231},
year = {2010}
}
Comments
13 pages 4 figures not included availiable upon request (send email to: [email protected]), IP-ASTP-18-92