Sigma meson and phonon-like excitations of the instanton vacuum

The possible nature of two experimentally observed scalar mesons that are widely spaced in mass and whose special features may be caused by the excitations of the instanton liquid considered as a model of the QCD vacuum. It is shown that mass changes in the scalar sector may prove to be unexpectably...

Full description

Saved in:
Bibliographic Details
Published in:Physics of atomic nuclei 2008-02, Vol.71 (2)
Main Authors: Zinovjev, G. M., Molodtsov, S. V., Siemiarczuk, T., Sissakian, A. N., Sorin, A. S.
Format: Article
Language:English
Subjects:
CORRECTIONS
EXCITATION
INSTANTONS
MASS
PHONONS
PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
QUANTUM CHROMODYNAMICS
QUARKS
SCALAR MESONS
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The possible nature of two experimentally observed scalar mesons that are widely spaced in mass and whose special features may be caused by the excitations of the instanton liquid considered as a model of the QCD vacuum. It is shown that mass changes in the scalar sector may prove to be unexpectably large, even though the scale of such corrections to the dynamical quark mass is relatively small.
ISSN:1063-7788
1562-692X
DOI:10.1007/S11450-008-2012-9