On the Anomalous Dimension of the Transversity Distribution $h_1(x,Q^2)$

Details On the Anomalous Dimension of the Transversity Distribution $h_1(x,Q^2)$ On the Anomalous Dimension of the Transversity Distribution $h_1(x,Q^2)$

2001-04-10

arxiv.org/abs/hep-ph/0104099v2

Eur.Phys.J.C20:683-687,2001

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages LATEX, 2 style files, more references added, to appear in Eur. Phys J. C

Scientific paper

10.1007/s100520100703

We calculate the leading order anomalous dimension of the transversity structure function directly using three different methods, the local light-cone expansion in the forward case, the non-forward case, and the short-distance expansion of the forward Compton amplitude. Our results agree with the original calculation by Artru and Mekhfi [Z. Phys. {\bf 45} (1990) 669], which has been doubted recently. We also comment on the next-to-leading order anomalous dimension.

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