IMPROVED PERTURBATIVE QCD ANALYSIS OF THE PION-PHOTON TRANSITION FORM-FACTOR

Authors
ONG S
Citation
S. Ong, IMPROVED PERTURBATIVE QCD ANALYSIS OF THE PION-PHOTON TRANSITION FORM-FACTOR, Physical review. D. Particles and fields, 52(5), 1995, pp. 3111-3114
Citations number
29
Categorie Soggetti
Physics, Particles & Fields
Journal title
Physical review. D. Particles and fields → ACNP
ISSN journal
05562821
Volume
52
Issue
5
Year of publication
1995
Pages
3111 - 3114
Database
ISI
SICI code
0556-2821(1995)52:5<3111:IPQAOT>2.0.ZU;2-W
Abstract
We reexamine the transition form factor in pi degrees coupling to gamm agamma* in the framework of a perturbative QCD approach based on the modified factorization formula. Sudakov suppression is less important here than in other exclusive channels and can be used to check the har d-scattering approach of Brodsky and Lepage in this process.