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Chromomagnetic mechanism for the X(3872) resonance

H. Høgaasen1,*, J.-M. Richard2,†, and P. Sorba3,‡

  • 1Department of Physics, University of Oslo, Box 1048 NO-0316 Oslo Norway
  • 2Laboratoire de Physique Subatomique et Cosmologie, Université Joseph Fourier–IN2P3-CNRS 53, avenue des Martyrs, 38026 Grenoble cedex, France
  • 3Laboratoire d’Annecy-le-Vieux de Physique Théorique (LAPTH) 9 chemin de Bellevue, B.P. 110, 74941 Annecy-le-Vieux Cedex, France

  • *Electronic address: hallstein.hogasen@fys.uio.no
  • †Electronic address: jean-marc.richard@lpsc.in2p3.fr
  • ‡Electronic address: sorba@lapp.in2p3.fr
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Phys. Rev. D 73, 054013 – Published 17 March, 2006

DOI: https://doi.org/10.1103/PhysRevD.73.054013

Abstract

The chromomagnetic interaction, with proper account for flavor-symmetry breaking, is shown to explain the mass and coupling properties of the X(3872) resonance as a JPC=1++ state consisting of a heavy quark-antiquark pair and a light one. It is crucial to introduce all the spin-color configurations compatible with these quantum numbers and diagonalize the chromomagnetic interaction in this basis. This approach thus differs from the molecular picture DD¯* and from the diquark–anti-diquark picture.

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Phys. Rev. D 73, 054013– Published 17 March, 2006
  • Received 3 November 2005

© 2006 American Physical Society

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