ar X iv : h ep - p h / 99 12 33 2 v 1 1 4 D ec 1 99 9 Scalar Mesons as “ Simple ” QQ̄ States
نویسندگان
چکیده
Abstract. The Nijmegen Unitarized Meson Model and its application to scalar mesons is briefly revisited. It is shown that all scalar states up to 1.5 GeV can be described as 3P0 qq̄ states coupled to the OZI-allowed open and closed two-meson channels consisting of pseudoscalar and vector mesons. Crucial are the manifestation of a resonancedoubling phenomenon, typical for strong S-wave decay, and the employment of truly flavor-symmetric coupling constants. Also S-wave meson-meson scattering is thus reasonably well described, without any parameter fit.
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