Do c(c)over-barn(n)over-tilde bound states exist?
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Do c(c)over-barn(n)over-tilde bound states exist?

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Do c(c)over-barn(n)over-tilde bound states exist?

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Vijande Asenjo, Javier Perfil; Weissman, E.; Valcarce Mejía, Alfredo; Barnea, Nir
Aquest document és un/a article, creat/da en: 2007
The four-quark system c (c) over barn (n) over tilde is studied in the framework of the constituent quark model. Using different types of quark-quark potentials, we solve the four-body Schrodinger equation by means of the hyperspherical harmonic formalism. Exploring the low laying J(PC) states for different isospin configurations no four-quark bound states have been found. Of particular interest is the possible four-quark structure of the X(3872). We rule out the possibility that this particle is a compact tetraquark system, unless additional correlations, either in the form of diquarks or at the level of the interacting potential, not considered in simple quark models do contribute.

    Vijande Asenjo, Javier Weissman, E. Valcarce Mejía, Alfredo Barnea, Nir 2007 Do c(c)over-barn(n)over-tilde bound states exist? Physical Review D 76 9 094022-1 094022-17
http://dx.doi.org/10.1103/PhysRevD.76.094022
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