DETERMINATION OF LEADING TWIST NON-SINGLET OPERATOR MATRIX-ELEMENTS BY QCD SUM-RULES

Authors
ROSS GG CHAMOUN N
Citation
Gg. Ross et N. Chamoun, DETERMINATION OF LEADING TWIST NON-SINGLET OPERATOR MATRIX-ELEMENTS BY QCD SUM-RULES, Physics letters. Section B, 380(1-2), 1996, pp. 151-158
Citations number
12
Categorie Soggetti
Physics
Journal title
Physics letters. Section B → ACNP
ISSN journal
03702693
Volume
380
Issue
1-2
Year of publication
1996
Pages
151 - 158
Database
ISI
SICI code
0370-2693(1996)380:1-2<151:DOLTNO>2.0.ZU;2-Z
Abstract
We use QCD sum rules to determine the twist-two non-singlet operator m atrix elements and fixed x structure functions paying particular regar d to the estimate of the errors. Particularly for the matrix element d etermination, we find large uncertainties due to radiative and higher dimension contributions. We consider the origin of these large correct ions and comment on their consequences for other operator matrix eleme nt determinations.