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Pionic Decays of Hadrons and the Coupling of Pions to Quarks

  • D. O. Riska
Conference paper
Part of the Few-Body Systems book series (FEWBODY, volume 15)

Abstract

The pion decay rates of excited heavy-light flavor mesons states can provide direct information on the coupling of pions to light-flavor constituent quarks because pions only couple to their light flavor constituent. The chiral quark model describes the empirical widths of excited D-mesons fairly satisfactorily. In this model the pion coupling is determined by the axial coupling of the light flavor quarks. The reaction D s * D s π0 provides information on the η-meson coupling to strange constituent quarks, as it is mediated by π0 - η mixing. The two pion decay rates of heavy quarkonia implies pion exchange between heavy quarks and antiquarks, which is phenomenologically significant.

Keywords

Decay Width Quark Model Constituent Quark Charm Quark Pion Decay 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag 2003

Authors and Affiliations

  • D. O. Riska
    • 1
    • 2
  1. 1.Helsinki Institute of PhysicsUniversity of HelsinkiFinland
  2. 2.Department of Physical SciencesUniversity of HelsinkiFinland

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