Covariant light-front model of heavy mesons within heavy quark effective theory

Hai Yang Cheng, Chi Yee Cheung, Chien Wen Hwang, Wei Min Zhang

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)


In this paper we construct a covariant light-front model of heavy mesons within the framework of heavy quark effective theory (HQET). The covariant model consists of the light-front heavy meson bound states constructed in the heavy quark limit with heavy quark symmetry and heavy quark effective theory as its basis. Within this model, the Isgur-Wise function and decay constants in the infinite quark mass limit can be evaluated in a very simple and most general way. The results are ensured to be consistent with heavy quark symmetry. From the heavy-quark-limit bound states, we can further develop a systematic approach to calculate (Formula presented) corrections from the (Formula presented) expansion of QCD. This covariant model can serve as a quasi-first-principles description of heavy meson dynamics, namely, a phenomenological covariant bound state in the heavy quark limit which is consistent with heavy quark symmetry, plus a reliable first-principles computation of the (Formula presented) corrections in HQET in terms of the (Formula presented) expansion of the fundamental QCD theory.

Original languageEnglish
Pages (from-to)5598-5610
Number of pages13
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Issue number9
Publication statusPublished - 1998

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)


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