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The European Physical Journal A

, Volume 31, Issue 4, pp 722–724 | Cite as

The puzzle of the D and Ds mesons

  • J. Vijande
  • F. Fernández
  • A. Valcarce
QNP 2006

Abstract.

We present a theoretical framework that accounts for the new DJ and DsJ mesons measured in the open-charm sector. These resonances are properly described if considered as a mixture of conventional P-wave quark-antiquark states and four-quark components. The narrowest states are basically P-wave quark-antiquark mesons, while the dominantly four-quark states are shifted above the corresponding two-meson threshold. We study the electromagnetic decay widths as basic tools to scrutiny their nature.

PACS.

14.40.Lb Charmed mesons 14.40.Ev Other strange mesons 

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Copyright information

© Società Italiana di Fisica and Springer-Verlag 2007

Authors and Affiliations

  • J. Vijande
    • 1
    • 2
  • F. Fernández
    • 1
  • A. Valcarce
    • 1
  1. 1.Grupo de Fısica Nuclear and IUFFyMUniversidad de SalamancaSalamancaSpain
  2. 2.Departamento de Fısica Teórica and IFICUniversidad de Valencia - CSICValenciaSpain

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