Twist-3 effects for polarized virtual photon structure function $g_2^γ$

Details Twist-3 effects for polarized virtual photon structure function $g_2^γ$ Twist-3 effects for polarized virtual photon structure function $g_2^γ$

2002-11-09

arxiv.org/abs/hep-ph/0211130v1

Nucl.Phys.Proc.Suppl. 116 (2003) 121-125

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, 4 figures, Talk presented at the International Symposium Radcor 2002 and Loops and Legs 2002, September 8-13, Kloster

Scientific paper

10.1016/S0920-5632(03)80155-X

We investigate twist-3 effects in the polarized virtual photon. The structure function $g_2^\gamma$, which exists only for the virtual photon target and can be measured in future polarized $e^+ e^-$ collider experiments, receives both twist-2 and twist-3 contributions. The twist-3 part is analyzed in pure QED interaction as well as in LO QCD. We find the twist-3 contribution is appreciable for the photon in contrast to the nucleon case.

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