Identification of a Scalar Glueball

Abstract

We have performed a coupled channel study of the meson-meson S-waves involving isospins (I) 0, 1/2 and 3/2 up to 2 GeV. For the first time the channels ππ, K\bar{K}, ηη, σσ, ηη', η'η', ρρ, ωω, ωϕ$, ϕϕ, a_1πand π^*πare considered. All the resonances with masses below 2 GeV for I=0 and 1/2 are generated by the approach. We identify the f_0(1710) and a pole at 1.6 GeV, which is an important contribution to the f_0(1500), as glueballs. This is based on an accurate agreement of our results with predictions of lattice QCD and the chiral suppression of the coupling of a scalar glueball to \bar{q}q. Another nearby pole, mainly corresponding to the f_0(1370), is a pure octet state not mixed with the glueball.

5 pages, 1 figure. More data are included and reproduced. Some discussions have been rephrased

References in corpus (4)

• High-statistics measurement of neutral-pion pair production in two-photon collisions
• High-statistics measurement of neutral-pion pair production in two-photon collisions
• A Study in Depth of f0(1370)
• Reply to Comment on "Chiral suppression of scalar glueball decay"

Cited by in corpus (9)

• Vector meson-vector meson interaction in a hidden gauge unitary approach
• The ρρinteraction in the hidden gauge formalism and the f_0(1370) and f_2(1270) resonances
• Analytic properties of the scattering amplitude and resonances parameters in a meson exchange model
• On the ϕ(1020)f_0(980) S-wave scattering and the Y(2175) resonance
• Two photons into π^0π^0
• Model independent determination of the sigma pole
• Exclusive scalar $f_0(1500)$ meson production for energy ranges available at the GSI Facility for Antiproton and Ion Research (GSI-FAIR) and at the Japan Proton Accelerator Research Complex (J-PARC)
• Gluon-Glueball Duality and Glueball Searches
• S-wave γγ\to ππand f_0(980)\to ππ