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arxiv: hep-ph/9408354 · v1 · submitted 1994-08-23 · ✦ hep-ph

Spin Structure Function g₂ and Twist-3 Operators in QCD

Jiro KODAIRA , Tsuneo Uematsu , Yoshiaki YASUI This is my paper
classification ✦ hep-ph
keywords operatorsfunctionfunctionsoperatorrenormalizationspinstructurestudied
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We investigate the spin structure function $g_2 (x, Q^2 )$ in the framework of the operator product expansion and the renormalization group. The twist-3 operators appearing in QCD are examined and their relations are studied. It is noted that operators proportional to equation of motion appear in the operator mixing through renormalization, which can be studied from the relevant Green's functions. We also note that the coefficient functions can be properly fixed after the choice of independent operators.

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