Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2000-12-12
Physics
High Energy Physics
High Energy Physics - Phenomenology
15 pages including 3 Tables, no figures
Scientific paper
Using the trace anomaly and low energy relations, as well as the Witten-Veneziano formula for the mass of the $\eta'$ meson, we have developed a formalism which makes it possible to express the gluon condensate, the topological susceptibility and the mass of the $\eta'$ meson as a functions of the truly nonperturbative vacuum energy density which is one of the most important characteristics of the QCD true ground state. It was directly applied to the numerical evaluation of the chiral QCD vacuum topological structure within its quantum zero momentum modes enhancement model. A rather good agreement with phenomenological and experimental values of the above-mentioned quantities has been achieved. With the help of the Witten-Veneziano formula, we derived an absolute lower bounds for the pion decay constant and the mass of the $\eta'$ meson in the chiral limit. By introducing the most general parametrization of the gluon condensate, we also proposed how the correct $N_f$ (number of flavors) dependence of its phenomenologically extracted value could be restored.
No associations
LandOfFree
Mass of the $η'$ meson in the chiral limit in the zero momentum modes enhancement quantum model of the QCD nonperturbative vacuum does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Mass of the $η'$ meson in the chiral limit in the zero momentum modes enhancement quantum model of the QCD nonperturbative vacuum, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mass of the $η'$ meson in the chiral limit in the zero momentum modes enhancement quantum model of the QCD nonperturbative vacuum will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-257702