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The very recently observed D^*_{sJ}(2317)^+ meson is described as aquasi-bound scalar c\bar{s} state in a unitarized meson model, owing itsexistence to the strong ^3P_0 OZI-allowed coupling to the nearby S-wave DKthreshold. By the same mechanism, a scalar D_0(2100-2300) resonance ispredicted slightly above the D\pi threshold. These scalars are the charmedcousins of the light scalar nonet f_0(600), f_0(980), K^*_0(800), and a_0(980),reproduced by the same model. The standard c\bar{n} and c\bar{s} charmedscalars D_{0} and D_{s0}, cousins of the scalar nonet f_0(1370), f_0(1500),K_0^*(1430), and a_0(1450), are predicted to lie at about 2.64 and 2.79 GeV,respectively, both with a width of some 200 MeV.Comment: 6 pages, 2 figures included, plain LaTeX; PACS numbers 14.40.Lb,  13.25.Ft, 13.75.Lb, 12.40.Yx; v2: changes in text and title; v3: one  reference added, one PACS number changed. Accepted for publication in  Physical Review Letter

physical review letters

Observed<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mi>D</mml:mi><mml:mi>s</mml:mi></mml:msub><mml:mo stretchy="false">(</mml:mo><mml:mn>2317</mml:mn><mml:mo stretchy="false">)</mml:mo></mml:math>and Tentative<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>D</mml:mi><mml:mo stretchy="false">(</mml:mo><mml:mn>2100</mml:mn><mml:mo>–</mml:mo><mml:mn>2300</mml:mn><mml:mo stretchy="false">)</mml:mo></mml:math>as the …

ObservedDs(2317)and TentativeD(2100–2300)as the …