QCD sum rule analysis for light vector and axial-vector mesons in vacuum and nuclear matter

Abstract

Extending previous work we study the constraints of QCD sum rules on mass and width of light vector and axial-vector mesons in vacuum and in a medium with finite nuclear density. For the latter case especially the effect of nuclear pions leading to vector-axial-vector mixing is included in the analysis.

Comments: RevTeX, 32 pages, 10 eps figures