AXIAL ANOMALY AND LOW-ENERGY TESTS FOR INSTANTON VACUUM MODELS IN QCD

Authors
DISALVO E MUSAKHANOV MM
Citation
E. Disalvo et Mm. Musakhanov, AXIAL ANOMALY AND LOW-ENERGY TESTS FOR INSTANTON VACUUM MODELS IN QCD, The European Physical Journal. C: Particles and Fields, 5(3), 1998, pp. 501-506
Citations number
34
Categorie Soggetti
Physics, Particles & Fields
Journal title
The European Physical Journal. C: Particles and Fields → ACNP
ISSN journal
14346044
Volume
5
Issue
3
Year of publication
1998
Pages
501 - 506
Database
ISI
SICI code
1434-6044(1998)5:3<501:AAALTF>2.0.ZU;2-#
Abstract
We propose to test instanton models of QCD - in particular the single instanton approximation and the Diakonov and Petrov model - against so me exact relations inferred from QCD + QED axial anomaly. One of these relations, in chiral limit, is satisfied by the latter model, but not by the former one. More refined tests, obtained beyond the chiral lim it, are not fulfilled by the Diakonov and Petrov model.