Diquark-Antidiquarks with Hidden or Open Charm and the Nature of X(3872)

Details Diquark-Antidiquarks with Hidden or Open Charm and the Nature of X(3872) Diquark-Antidiquarks with Hidden or Open Charm and the Nature of X(3872)

2004-12-07

arxiv.org/abs/hep-ph/0412098v2

Phys.Rev.D71:014028,2005

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages, 2 figures, revtex, minor typos corrected

Scientific paper

10.1103/PhysRevD.71.014028

Heavy-light diquarks can be the building blocks of a rich spectrum of states which can accommodate some of the newly observed charmonium-like resonances not fitting a pure c-cbar assignment. We examine this possibility for hidden and open charm diquark-antidiquark states deducing spectra from constituent quark masses and spin-spin interactions. Taking the X(3872) as input we predict the existence of a 2++ state that can be associated to the X(3940) observed by Belle and re-examine the state claimed by SELEX, X(2632). The possible assignment of the previously discovered states D_s(2317) and D_s(2457) is discussed. We predict X(3872) to be made of two components with a mass difference related to (m_u-m_d) and discuss the production of X(3872) and of its charged partner X^(+-) in the weak decays of B^(+,0).

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