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Observed D s ( 2317 ) and Tentative D ( 2100 – 2300 ) as the …

2003; American Physical Society; Volume: 91; Issue: 1 Linguagem: Inglês

10.1103/physrevlett.91.012003

ISSN

1092-0145

Autores

Eef van Beveren, George Rupp,

Tópico(s)

High-Energy Particle Collisions Research

Resumo

The very recently observed D(*)(sJ)(2317)(+) meson is described as a quasibound scalar csmacr; state in a unitarized meson model, owing its existence to the strong 3P0 Okubo-Zweig-Iizuka-allowed coupling to the nearby S-wave DK threshold. By the same mechanism, a scalar D(*)(0)(2100-2300) resonance is predicted above the Dpi threshold. These scalars are the charmed cousins 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 cnmacr; and csmacr; charmed scalars D0 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.

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