ar X iv : 0 70 8 . 32 85 v 1 [ he p - ph ] 2 4 A ug 2 00 7 Do cc̄nn̄ bound states exist ?

نویسنده

  • A. Valcarce
چکیده

The four–quark system cc̄nn̄ is studied in the framework of the constituent quark model. Using different types of quark-quark potentials, we solve the four–body Schrödinger equation by means of the hyperspherical harmonic formalism. Exploring the low laying JPC 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. PACS numbers: 12.39.Jh,14.40.Lb,21.45.+v,31.15.Ja

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تاریخ انتشار 2013