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arXiv · hep-ph/0211130

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

Ken Sasaki
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Abstract

We investigate twist-3 effects in the polarized virtual photon. The structure function $g_2^γ$, 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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Ken Sasaki. 2002-11-09. Twist-3 effects for polarized virtual photon structure function $g_2^γ$. https://doi.org/10.1016/s0920-5632(03)80155-x

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