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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; 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.

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