Tensor charge of the nucleon from the QCD sum rule with unconventional interpolating field

Authors
Citation
Zx. Cao et Hx. He, Tensor charge of the nucleon from the QCD sum rule with unconventional interpolating field, HIGH EN P N, 24(7), 2000, pp. 624-630
Citations number
9
Categorie Soggetti
Physics
Journal title
HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION
ISSN journal
02543052 → ACNP
Volume
24
Issue
7
Year of publication
2000
Pages
624 - 630
Database
ISI
SICI code
0254-3052(200007)24:7<624:TCOTNF>2.0.ZU;2-C
Abstract
The tensor charges of the nucleon are calculated by using the QCD Sum Rules in the external tensor field,where the nucleon interpolating field(nucleon current operator)takes the most general form, i.e. the unconventional one. Calculation includes the terms up to demension 8. All possible effects on QCD sum rule calculations of tensor charges of the nucleon by changing inte rpelating field and tensor susceptibilities are analysed. The calculations show that the stable solution for QCD sum rules of tensor charges of the nu cleon can not be obtained by changing interpolating field and tensor suscep tibilities. However,the stable behavior of the solutions for the sum rules of isovector and isoscalar tensor charges may be improved when the interpol ation field takes the best one. The tensor charges of the nucleon by taking average over the so-called"sum rule window"are given.