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The β-term for D*D γ within a heavy-light chiral quark model

  • A. Hiorth
  • J.O. Eeg
Original Articles

Abstract

We present a calculation of the β-term for D*D γ within a quark model which exhibits both chiral symmetry and heavy quark symmetry. Soft gluon effects in terms of a model dependent gluon condensate are included. Also, calculations of 1/m c corrections are performed. We find that the value of β is rather sensitive to the constituent quark mass compared to other quantities calculated within the same model. Also, to obtain a value close to the experimental value, one has to choose a constituent light quark mass larger than for other quantities studied in previous papers. For a light quark mass in the range 250 to 300 MeV and a quark condensate in the range -(250 - 270 MeV)3 we find the value (2.5 ± 0.6) GeV–1. This value is in agreement with the value of β extracted from experiment (2.7 ± 0.2) GeV–1.

Keywords

Field Theory Elementary Particle Quantum Field Theory Quark Mass Heavy Quark 
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, Società Italiana di Fisica 2004

Authors and Affiliations

  • A. Hiorth
    • 1
  • J.O. Eeg
    • 1
  1. 1.Department of Physics, University of Oslo, P.O. Box 1048 Blindern, N-0316 OsloNorway

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