Scalar Glueball-qqbar Mixing above 1 GeV and implications for Lattice QCD

Details Scalar Glueball-qqbar Mixing above 1 GeV and implications for Lattice QCD Scalar Glueball-qqbar Mixing above 1 GeV and implications for Lattice QCD

2001-03-15

arxiv.org/abs/hep-ph/0103173v1

Eur.Phys.J.C21:531-543,2001

Physics

High Energy Physics

High Energy Physics - Phenomenology

33 pages, Latex, 4 Figures

Scientific paper

10.1007/s100520100748

Lattice QCD predictions have motivated several recent studies of the mixing between the predicted JPC = 0++ glueball and a qqbar nonet in the 1.3 to 1.7 GeV region. We show that results from apparently different approaches have some common features, explain why this is so and abstract general conclusions. We place particular emphasis on the flavour dependent constraints imposed by decays of the f0(1370), f0(1500) and f0(1700) to all pairs of pseudoscalar mesons. From these results we identify a systematic correlation between glueball mass, mixing, and flavour symmetry breaking and conclude that the glueball may be rather lighter than some quenched lattice QCD computations have suggested. We identify experimental tests that can determine the dynamics of a glueball in this mass region and discuss quantitatively the feasibility of decoding glueball-qqbar mixing.

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