Journalartikel

Jahr der Veröffentlichung: 2001

Zeitschrift: Physical Review C

Bandnummer: 64

Heftnummer: 1

ISSN: 0556-2813

eISSN: 1089-490X

Open Access Status: Green

DOI Link: https://doi.org/10.1103/PhysRevC.64.015202

Verlag: American Physical Society

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. We examine the consequences of the mixing effect for positions and shapes of the peaks which show up in the current-current correlators. We also discuss the model dependences in the amount of mixing, in the evaluation of the four-quark condensate, and in the width parametrizations for the meson spectral functions.

Harvard-Zitierstil: Leupold, S. (2001) QCD sum rule analysis for light vector and axial-vector mesons in vacuum and nuclear matter, Physical Review C, 64(1), Article 015202. https://doi.org/10.1103/PhysRevC.64.015202

APA-Zitierstil: Leupold, S. (2001). QCD sum rule analysis for light vector and axial-vector mesons in vacuum and nuclear matter. Physical Review C. 64(1), Article 015202. https://doi.org/10.1103/PhysRevC.64.015202