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arXiv · 1009.3062

Constructing local composite operators for glueball states from a confining Gribov propagator

M. A. L. Capri·A. J. Gomez·M. S. Guimaraes·V. E. R. Lemes·S. P. Sorella·D. G. Tedesco
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Abstract

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

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M. A. L. Capri, A. J. Gomez, M. S. Guimaraes, V. E. R. Lemes, S. P. Sorella, D. G. Tedesco. 2010-12-10. Constructing local composite operators for glueball states from a confining Gribov propagator. https://doi.org/10.1140/epjc%2Fs10052-010-1525-x

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