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Topological effects in QCD and the problem of short-distance singularities
The topological susceptibility and the higher moments of the topological charge distribution in QCD are expressed through certain n-point functions of the scalar and pseudo-scalar quark densities at vanishing momenta, which are free of short-distance singularities. Since the normalization of the cor...
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Lenguaje: | eng |
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2004
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Acceso en línea: | https://dx.doi.org/10.1016/j.physletb.2004.04.076 http://cds.cern.ch/record/728645 |