A chromomagnetic mechanism for the X(3872) resonance

Details A chromomagnetic mechanism for the X(3872) resonance A chromomagnetic mechanism for the X(3872) resonance

2005-11-04

arxiv.org/abs/hep-ph/0511039v2

Phys.Rev.D73:054013,2006

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages - revtex4 - Typos corrected, refs. added, to be published in Phys. Rev. D

Scientific paper

10.1103/PhysRevD.73.054013

The chromomagnetic interaction, with proper account for flavour-symmetry breaking, is shown to explain the mass and coupling properties of the X(3872) resonance as a $J^{PC}$ = 1$^{++}$ state consisting of a heavy quark-antiquark pair and a light one. It is crucial to introduce all the spin-colour configurations compatible with these quantum numbers and diagonalise the chromomagnetic interaction in this basis. This approach thus differs from the molecular picture $D\bar {D}*$ and from the diquark-antidiquark picture.

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