Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2002-02-15
Phys.Rev. D65 (2002) 114018
Physics
High Energy Physics
High Energy Physics - Phenomenology
27 pages, LaTeX, 9 eps figures, eqsection.sty file included, Appendix A added, some minor changes for Fig.1
Scientific paper
10.1103/PhysRevD.65.114018
We investigate the twist-3 effects in the polarized virtual photon structure. The structure functions $g_1^\gamma$ and $g_2^\gamma$ of polarized photon could be experimentally studied in the future polarized $ep$ or $e^+e^-$ colliders. The leading contributions to $g_1^\gamma$ are the twist-2 effects, while another structure function $g_2^\gamma$, which only exists for the virtual photon target, receives not only the twist-2 but also twist-3 contributions. We first show that the twist-3 effects actually exist in the box-diagram contributions and we extract the twist-3 part, which can also be reproduced by the pure QED operator product expansion. We then calculate the non-trivial lowest moment ($n=3$) of the twist-3 contribution to $g_2^\gamma$ in QCD. For large $N_c$ (the number of colors), the QCD analysis of the twist-3 effects in the flavor nonsinglet part of $g_2^\gamma$ becomes tractable and we can obtain its moments in a compact form for all $n$.
Baba Hideshi
Sasaki Ken
Uematsu Tsuneo
No associations
LandOfFree
Polarized Virtual Photon Structure Function $g_2^γ$ and Twist-3 Effects in 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 Polarized Virtual Photon Structure Function $g_2^γ$ and Twist-3 Effects in QCD, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polarized Virtual Photon Structure Function $g_2^γ$ and Twist-3 Effects in QCD will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-709675