slides

More about on the mass of the new charmonium states

Abstract

If the X(3872)X(3872) is described by the picture as a mixture of the charmonium and molecular DDD^{\ast} D states; Y(3940)Y(3940) as a mixture of the χc0\chi_{c0} and DDD^\ast D^\ast states; and X(4260)X(4260) as a mixture of the tetra-quark and charmonium sates, their orthogonal combinations should also exist. We estimate the mass and residues of the states within the QCD sum rules method. We find that the mass splitting among XX, YY and their orthogonal states is at most 200MeV200MeV. Experimental search of these new states can play critical role for establishing the nature of the new charmonium states.Comment: 12 pages, 6 figures, LaTeX formatte

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