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The European Physical Journal A

, Volume 33, Issue 2, pp 119–131 | Cite as

Axial resonances in the open and hidden charm sectors

  • D. GamermannEmail author
  • E. Oset
Regular Article - Experimental Physics

Abstract.

A SU(4) flavor symmetrical Lagrangian is constructed for the interaction of the pseudo-scalar mesons with the vector mesons. SU(4) symmetry is broken to SU(3) by suppression of terms in the Lagrangian where the interaction should be driven by charmed mesons. Chiral symmetry can be restored by setting this new SU(4) symmetry-breaking parameters to zero. Unitarization in coupled channels leads to the dynamical generation of resonances. Many known axial resonances can be identified including the new controversial X(3872) and the structure found recently by Belle around 3875MeV in the hidden charm sector. Also new resonances are predicted, some of them with exotic quantum numbers.

PACS.

11.10.St Bound and unstable states; Bethe-Salpeter equations 11.80.Gw Multichannel scattering 12.39.Hg Heavy quark effective theory 12.39.Fe Chiral Lagrangians 

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Copyright information

© Società Italiana di Fisica and Springer-Verlag 2007

Authors and Affiliations

  1. 1.Departamento de Fısica Teórica and IFICCentro Mixto Universidad de Valencia-CSIC, Institutos de Investigación de PaternaValenciaSpain

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