Journalartikel

Jahr der Veröffentlichung: 2004

Seiten: 283-302

Zeitschrift: Nuclear Physics A: Nuclear and Hadronic Physics

Bandnummer: 743

Heftnummer: 4

ISSN: 0375-9474

eISSN: 1873-1554

Open Access Status: Green

DOI Link: https://doi.org/10.1016/j.nuclphysa.2004.08.005

Verlag: Elsevier

Abstract: 
Aiming at the calculation of the properties of rho-mesons, non-perturbative QCD-based methods are discussed concerning their potentials as well as their short-comings. The latter are overcome by combining these techniques. The utilized methods are (i) the chiral constituent quark model deduced from the instanton vacuum model and large-N-c arguments, (ii) chiral perturbation theory unitarized by the inverse amplitude method and (iii) QCD sum rules. Advantages of the combination of these methods are especially the absence of un-physical quark-production thresholds and parameter-free results. Already in the chiral limit and in leading order in 1/N-c one obtains a reasonable result for the mass of the rho-meson, namely m(rho) approximate to 790 MeV. Using the KSFR relation the universality of the rho-meson coupling is recovered. The latter is found to be g approximate to 6.0. (C) 2004 Elsevier B.V. All rights reserved.

Harvard-Zitierstil: Leupold, S. (2004) Rho meson properties from combining QCD-based models, Nuclear Physics A: Nuclear and Hadronic Physics, 743(4), pp. 283-302. https://doi.org/10.1016/j.nuclphysa.2004.08.005

APA-Zitierstil: Leupold, S. (2004). Rho meson properties from combining QCD-based models. Nuclear Physics A: Nuclear and Hadronic Physics. 743(4), 283-302. https://doi.org/10.1016/j.nuclphysa.2004.08.005