Mixing of scalar glueballs and flavour-singlet scalar mesons

Details Mixing of scalar glueballs and flavour-singlet scalar mesons Mixing of scalar glueballs and flavour-singlet scalar mesons

2000-10-12

arxiv.org/abs/hep-lat/0010019v2

Phys.Rev.D63:114503,2001

Physics

High Energy Physics

High Energy Physics - Lattice

23 pages, 5 postscript figures

Scientific paper

10.1103/PhysRevD.63.114503

We discuss in detail the extraction of hadronic mixing strengths from lattice studies. We apply this to the mixing of a scalar glueball and a scalar meson in the quenched approximation. We also measure correlations appropriate for flavour-singlet scalar mesons using dynamical quark configurations from UKQCD. This enables us to compare the results from the quenched study of the mixing with the direct determination of the mixed spectrum. Improved methods of evaluating the disconnected quark diagrams are also presented.

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