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arXiv · hep-ph/9710454

Renormalization of the Twist-3 Flavor Singlet Operators in a Covariant Gauge

Jiro Kodaira·Takashi Nasuno·Hiroshi Tochimura·Kazuhiro Tanaka·Yoshiaki Yasui
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Abstract

We investigate the nucleon's transverse spin-dependent structure function g_2(x, Q^2) in the framework of the operator product expansion and the renormalization group. We construct the complete set of the twist-3 operators for the flavor singlet channel, and give the relations among them. We develop an efficient, covariant approach to derive the anomalous dimension matrix of the twist-3 singlet operators by computing the off-shell Green's functions. As an application, we investigate the Q^2-evolution of g_2(x, Q^{2}) for the lowest moment case, and discuss its experimental implication.

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Jiro Kodaira, Takashi Nasuno, Hiroshi Tochimura, Kazuhiro Tanaka, Yoshiaki Yasui. 1997-11-24. Renormalization of the Twist-3 Flavor Singlet Operators in a Covariant Gauge. https://arxiv.org/abs/hep-ph/9710454

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