Next-to-leading order effects on a transversity bound

Citation
Ap. Contogouris et al., Next-to-leading order effects on a transversity bound, PHYS LETT B, 442(1-4), 1998, pp. 374-380
Citations number
18
Categorie Soggetti
Physics
Journal title
PHYSICS LETTERS B
ISSN journal
03702693 → ACNP
Volume
442
Issue
1-4
Year of publication
1998
Pages
374 - 380
Database
ISI
SICI code
0370-2693(199812)442:1-4<374:NOEOAT>2.0.ZU;2-Y
Abstract
The effect of next-to-leading order corrections (NLOC) on the transversity bound proposed by Soffer is reexamined. With proper definition of NLOC it i s shown that the effect is significant, substantially strengthening the bou nd for all q = u, d and s quarks; the reason is explained. Assuming that th e bound is saturated at Q(0)(2) = 4 GeV2 and evolving the next-to-leading o rder unpolarized, helicity and transversity distributions to Q(2) > Q(0)(2) via 2-loop anomalous dimensions we find that the bound is preserved. (C) 1 998 Elsevier Science B.V. All rights reserved.