{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,1]],"date-time":"2026-05-01T03:22:19Z","timestamp":1777605739002,"version":"3.51.4"},"reference-count":69,"publisher":"World Scientific Pub Co Pte Lt","issue":"26","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Mod. Phys. Lett. A"],"published-print":{"date-parts":[[2004,8,30]]},"abstract":"<jats:p>The classification of scalar and vector mesons is reviewed within the framework of the Resonance-Spectrum Expansion (RSE). This method allows a simple and straightforward description of non-exotic meson\u2013meson scattering, incorporating the effects of quark confinement and OZI-allowed decay in a fully nonperturbative way. Results for resonances and bound states are compared to experiment, on the basis of computed pole positions and cross-sections. New predictions for open-charm and -bottom scalar mesons are presented.<\/jats:p><jats:p>Concretely, observed vector states for [Formula: see text] and [Formula: see text] are reproduced, and others are predicted. In the light scalar sector, the now established two nonets, one below 1 GeV and one in the region 1.3\u20131.5 GeV, are easily described, through the appearance of extra poles in the S-matrix. The recently found [Formula: see text](2317) meson is accurately reproduced by the same mechanism, as a quasi-bound state in the coupled [Formula: see text] system.<\/jats:p><jats:p>In S-wave D\u03c0 and B\u03c0 scattering, new resonances are foreseen close to threshold, i.e. a [Formula: see text] at 2.16\u00b10.05 GeV some 250 MeV wide, and a [Formula: see text] at 5.47\u00b10.05 GeV with a width of about 50 MeV. Additional predictions concern the existence of [Formula: see text] and [Formula: see text] scalar mesons, stable with respect to OZI-allowed decay to BK and BD, respectively, namely at 5.61\u00b10.05 GeV resp. 6.64\u00b10.05 GeV.<\/jats:p>","DOI":"10.1142\/s0217732304015208","type":"journal-article","created":{"date-parts":[[2004,8,16]],"date-time":"2004-08-16T01:33:21Z","timestamp":1092620001000},"page":"1949-1967","source":"Crossref","is-referenced-by-count":22,"title":["CLASSIFICATION OF THE SCALAR MESONS: A STRANGE POLE EXPEDITION INTO CHARM AND BEAUTY TERRITORY"],"prefix":"10.1142","volume":"19","author":[{"given":"EEF","family":"VAN BEVEREN","sequence":"first","affiliation":[{"name":"Centro de F\u00edsica Te\u00f3rica, Departamento de F\u00edsica, Universidade de Coimbra, P-3000 Coimbra, Portugal"}]},{"given":"GEORGE","family":"RUPP","sequence":"additional","affiliation":[{"name":"Centro de F\u00edsica das Interac\u00e7\u00f5es Fundamentais, Instituto Superior T\u00e9cnico, Edif\u00edcio Ci\u00eancia, P-1049-001 Lisboa Codex, Portugal"}]}],"member":"219","published-online":{"date-parts":[[2011,11,21]]},"reference":[{"key":"rf1","first-page":"193","author":"von Fraunhofer J.","journal-title":"Denkschriften K\u00f6niglichen Akad. 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