Pion Decay of Heavy-Light Mesons

  • D.-O. Riska
Conference paper
Part of the Few-Body Systems book series (FEWBODY, volume 14)


As single pions do not couple to heavy flavor quarks, the pion decay rates of excited heavy-light flavor mesons to their ground states provide direct information on the coupling of pions to light-flavor constituent quarks. The present empirical widths rates of excited D-mesons are satisfactorily described by the chiral quark model, where the pion coupling is determined by the axial coupling of the light flavor quarks. The reaction D s * D s π 0 provides information on the η-meson coupling to strange constituent quarks, as it is mediated by π0 - η mixing.


Decay Width Quark Model Constituent Quark Charm Quark Axial Current 
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  1. 1.
    S. Weinberg: Phys. Rev. Lett. 67, 3473 (1991)ADSCrossRefGoogle Scholar
  2. 2.
    J.L. Goity and W. Roberts: Phys. Rev. D60, 034001 (1995)ADSGoogle Scholar
  3. 3.
    S. Weinberg: Phys. Rev. Lett. 65, 1181 (1990)MathSciNetADSCrossRefGoogle Scholar
  4. 4.
    R. Blankenbecler and R. Sugar: Phys. Rev. 142, 1051 (1966)MathSciNetADSCrossRefGoogle Scholar
  5. 5.
    T.A. Lähde, C.J. Nyfält and D.O. Riska: Nucl. Phys. A674, 141 (2000)ADSGoogle Scholar
  6. 6.
    H. Schnitzer: Phys. Lett. B76, 461 (1978)ADSGoogle Scholar
  7. 7.
    N. Isgur: Phys. Rev. D57, 4041 (1998)ADSGoogle Scholar
  8. 8.
    K.O.E. Henriksson et al.: Nucl. Phys. A686, 355 (2001)ADSGoogle Scholar
  9. 9.
    D.E. Groom et al.: Eur. Phys. J. C15, 1 (2000)Google Scholar
  10. 10.
    S. Ahmed et al.: Phys. Rev. Lett. 87, 251801 (2001)ADSCrossRefGoogle Scholar
  11. 11.
    K. Tsushima and D. O. Riska: Nucl. Phys. A549, 313 (1992)ADSGoogle Scholar
  12. 12.
    T.A. Lähde and D. O. Riska: Nucl. Phys. A693, 755 (2001)ADSGoogle Scholar
  13. 13.
    P. Cho and M. Wise: Phys. Rev. D49, 6228 (1994)ADSGoogle Scholar
  14. 14.
    T.A. Lähde and D.O. Riska: hep-ph/0204230Google Scholar

Copyright information

© Springer-Verlag/Wien 2003

Authors and Affiliations

  • D.-O. Riska
    • 1
  1. 1.Helsinki Institute of Physics and Department of Physical SciencesUniversity of HelsinkiFinland

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