QCD SUM-RULES VS CHIRAL PERTURBATION-THEORY

Authors
GRIEGEL DK COHEN TD
Citation
Dk. Griegel et Td. Cohen, QCD SUM-RULES VS CHIRAL PERTURBATION-THEORY, Physics letters. Section B, 333(1-2), 1994, pp. 27-32
Citations number
17
Categorie Soggetti
Physics
Journal title
Physics letters. Section B → ACNP
ISSN journal
03702693
Volume
333
Issue
1-2
Year of publication
1994
Pages
27 - 32
Database
ISI
SICI code
0370-2693(1994)333:1-2<27:QSVCP>2.0.ZU;2-6
Abstract
QCD sum rules are useful tools for studying the spectral properties of hadrons; however, assumptions underlying standard sum-rule analyses c an lead to inconsistencies with known results of chiral perturbation t heory. This possibility is demonstrated with QCD sum-rule extractions of the nucleon mass and sigma term. In both cases, inconsistent chiral behavior leads to an uncertainty in the sum-rule predictions of appro ximately 100 MeV.