S-wave meson scattering up to 2 GeV and its spectroscopy

Details S-wave meson scattering up to 2 GeV and its spectroscopy S-wave meson scattering up to 2 GeV and its spectroscopy

2008-04-15

arxiv.org/abs/0804.2341v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, 1 figure. Talk given at SCADRON 70 (Workshop on Scalar Mesons and Related Topics, Lisbon, 11-16 February 2008)

Scientific paper

10.1142/S0217751X09044127

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 f_0(600) or sigma, f_0(980), f_0(1370), f_0(1500), f_0(1710) and f_0(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 f_0(1710), together with an important contribution to the f_0(1500), are glueballs. Another pole, which corresponds mainly to the f_0(1370), is a pure octet I=0 state, and does not mix with the glueball.

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