S-wave meson scattering up to 2 GeV and its spectroscopy
Abstract
We have performed a thorough study of the meson-meson S-waves with isospin (I) 0 and 1/2, up to sqrt(s) ~ 2 GeV. This is the first study that includes 13 channels that have their threshold below that energy. All the resonances below 2 GeV, namely the f0(600) or sigma, f0(980), f0(1370), f0(1500), f0(1710) and f0(1790) for I=0, and the K*0(800) or kappa, K*0(1430) and K*0(1950) for I=1/2, are generated. We can then extract a clear picture of the spectroscopy, finding that the f0(1710), together with an important contribution to the f0(1500), are glueballs. Another pole, which corresponds mainly to the f0(1370), is a pure octet I=0 state, and does not mix with the glueball.
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