Implications of a DK Molecule at 2.32 GeV

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dc.creatorBarnes, T.
dc.creatorClose, F. E.
dc.creatorLipkin, H. J.
dc.date2003-05-02
dc.date.accessioned2026-07-07T10:28:47Z
dc.date.available2026-07-07T10:28:47Z
dc.descriptionWe discuss the implications of a possible quasinuclear DK bound state at 2.32 GeV. Evidence for such a state was recently reported in D_s^+pi^o by the BaBar Collaboration. We first note that a conventional quark model c-sbar assignment is implausible, and then consider other options involving multiquark systems. An I=0 c sbar n nbar baryonium assignment is one possibility. We instead favor a DK meson molecule assignment, which can account for the mass and quantum numbers of this state. The higher-mass scalar c-sbar state expected at 2.48 GeV is predicted to have a very large DK coupling, which would encourage formation of an I=0 DK molecule. Isospin mixing is expected in hadron molecules, and a dominantly I=0 DK state with some I=1 admixture could explain both the narrow total width of the 2.32 GeV state as well as the observed decay to D_s^+ pi^o. Additional measurements that can be used to test this and related scenarios are discussed.
dc.description6 pages, 1 figure
dc.identifierhttps://arxiv.org/abs/hep-ph/0305025
dc.identifierhttp://arxiv.org/abs/hep-ph/0305025
dc.identifierPhys.Rev.D68:054006,2003
dc.identifierdoi:10.1103/PhysRevD.68.054006
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/177573
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectNuclear Theory
dc.titleImplications of a DK Molecule at 2.32 GeV
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