منابع مشابه
Evidence for a Scalar Glueball
We show that the newly discovered scalar meson f0(1500) at LEAR has properties compatible with the lightest scalar glueball predicted by lattice QCD and incompatible with a QQ state. We suggest that decays of glueballs are into pairs of glueballs (including η, η or (ππ)S) or by mixing with nearby QQ̄ states. The partial widths of f0(1500) are in accord with this hypothesis, tests of which includ...
متن کاملScalar Glueball Decay *
We evaluate the coupling constant for the lightest scalar glueball to decay to pseudoscalar meson pairs. The calculation is done in the valence approximation on a 16 3 × 24 lattice at β = 5.70 for two different values of pseudoscalar meson mass. A valence approximation calculation [1] using between 25000 and 30000 gauge configurations at each of several different β gives a value of 1740 ± 71 Me...
متن کاملThe scalar glueball
We analyze several scenarios for a scalar glueball using arguments based on sum rules, spectral decomposition, the 1 Nc approximation, the scales of the strong interaction and the topology of the flux tubes. The most appealing scenario on which we elaborate is one with a light glueball. Pacs: 12.38-t, 12.38.Aw,14.70.-e, 14.70.-j
متن کاملThe scalar glueball spectrum
We discuss scenarios for scalar glueballs using arguments based on sum rules, spectral decomposition, the 1 Nc approximation, the scales of the strong interaction and the topology of the flux tubes. We analyze the phenomenological support of those scenarios and their observational implications. Our investigations hint a rich low lying glueball spectrum. Pacs: 12.38-t, 12.38.Aw,14.70.-e, 14.70.-j
متن کاملUnquenching the scalar glueball
Computations in the quenched approximation on the lattice predict the lightest glueball to be a scalar in the 1.5−1.8 GeV region. Here we calculate the dynamical effect the coupling to two pseudoscalars has on the mass, width and decay pattern of such a scalar glueball. These hadronic interactions allow mixing with the qq scalar nonet, which is largely fixed by the well-established K 0(1430). T...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 1996
ISSN: 0556-2821,1089-4918
DOI: 10.1103/physrevd.53.295