QCD sum rules and the determination of leading twist nonsinglet operator matrix elements
Abstract
We use QCD sum rules to determine directly the leading twist nonsinglet operator matrix elements based on calculations of threepoint correlation functions in configuration space. We find a different result from that obtained by integrating the structure functions' expressions obtained by Belyaev and Ioffe based on calculations of fourpoint correlators in momentum space. The origin of this discrepancy remains unclear.
 Publication:

Physics Letters B
 Pub Date:
 February 1997
 DOI:
 10.1016/S03702693(97)001688
 arXiv:
 arXiv:hepph/9612467
 Bibcode:
 1997PhLB..397..287C
 Keywords:

 High Energy Physics  Phenomenology
 EPrint:
 9 pages, 5 figures