Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2000-07-06
Eur.Phys.J.C20:283-300,2001
Physics
High Energy Physics
High Energy Physics - Phenomenology
42 pages, LaTeX, 7 Postscript Figures, eqsection.sty file included; introduction and section 5 shortened, appendix D deleted
Scientific paper
10.1007/s100520100674
We investigate spin-dependent parton distributions in the polarized virtual photon target in perturbative QCD up to the next-to-leading order (NLO). In the case $\Lambda^2 \ll P^2 \ll Q^2$, where $-Q^2$ ($-P^2$) is the mass squared of the probe (target) photon, parton distributions can be predicted completely up to NLO, but they are factorization-scheme-dependent.We analyze parton distributions in six different factorization schemes and discuss their scheme dependence. We study, in particular, the QCD and QED axial anomaly effects on the first moments of parton distributions to see the interplay between the axial anomalies and factorization schemes. We also show that the factorization-scheme dependence is characterized by the large-$x$ behaviors of quark distributions in the virtual photon. Gluon distribution is predicted to be the same up to NLO among the six factorization schemes examined. In particular, the first moment of gluon distribution is found to be factorization-scheme independent up to NLO.
Sasaki Ken
Uematsu Tsuneo
No associations
LandOfFree
Factorization Scheme and Parton Distributions in the Polarized Virtual Photon Target 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 Factorization Scheme and Parton Distributions in the Polarized Virtual Photon Target, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Factorization Scheme and Parton Distributions in the Polarized Virtual Photon Target will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-17719