Properties and composition of the f₀(500) resonance
classification
✦ hep-ph
keywords
chiralcompositiondevelopmentsdispersiondualityenergyexpansionfinite
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In this talk we review our recent developments on the understanding of the nature of the f_0(500) resonance---or sigma meson---coming from the N_c expansion, dispersion relations with Chiral Perturbation Theory, as well as finite energy sum rules and semi-local duality.
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