On the anomalous dimension of the transversity distribution h(1)(x, Q(2))

Authors
Blumlein, J
Citation
J. Blumlein, On the anomalous dimension of the transversity distribution h(1)(x, Q(2)), EUR PHY J C, 20(4), 2001, pp. 683-687
Citations number
53
Categorie Soggetti
Physics
Journal title
EUROPEAN PHYSICAL JOURNAL C
ISSN journal
14346044 → ACNP
Volume
20
Issue
4
Year of publication
2001
Pages
683 - 687
Database
ISI
SICI code
1434-6044(200105)20:4<683:OTADOT>2.0.ZU;2-2
Abstract
We calculate the leading order anomalous dimension of the transversity stru cture function directly using three different methods, the local light-cone expansion in the forward case, the non-forward case, and the short-distanc e expansion of the forward Compton amplitude. Our results agree with the or iginal calculation by Artru and Mekhfi [Z. Phys. 45 (1990) 669], which has been doubted recently. We also comment on the next-to-leading order anomalo us dimension.