Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2010-09-15
Eur.Phys.J.C71:1525,2011
Physics
High Energy Physics
High Energy Physics - Theory
24 pages, 5 figures, version accepted for publication in the European Physical Journal C
Scientific paper
10.1140/epjc/s10052-010-1525-x
The construction of BRST invariant local operators with the quantum numbers of the lightest glueball states, $J^{PC}= 0^{++}, 2^{++}, 0^{-+}$, is worked out by making use of an Euclidean confining renormalizable gauge theory. The correlation functions of these operators are evaluated by employing a confining gluon propagator of the Gribov type and shown to display a spectral representation with positive spectral densities. An attempt to provide a first qualitative analysis of the ratios of the masses of the lightest glueballs is also discussed
Capri M. A. L.
Gomez Juan Alexander
Guimaraes Marcelo S.
Lemes V. E. R.
Sorella Silvio Paolo
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