The heavy mesons in Nambu–Jona-Lasinio model
نویسندگان
چکیده
We propose an extended Nambu–Jona-Lasinio model to include the heavy mesons with the heavy quark symmetry. The quark current-current interaction is generalized to include the heavy quark currents. In order to comply with the heavy quark spin symmetry at the heavy quark limit, the quark mass dependence of the interaction strength is introduced. The light and heavy pseudo-scalar and vector meson, their masses and the weak decay constants, are calculated in the unified frame.
منابع مشابه
ar X iv : h ep - p h / 95 12 29 4 v 2 1 6 A ug 1 99 6 April 1996 Heavy Quark Solitons in the Nambu – Jona - Lasinio Model
The Nambu–Jona-Lasinio model (NJL) is extended to incorporate heavy quark spin-symmetry. In this model baryons containing one heavy quark are analyzed as bound-states of light baryons, represented as chiral solitons, and mesons containing one heavy quark. From related studies in Skyrme type models, the ground-state heavy baryon is known to arise for the heavy meson in a P–wave configuration. In...
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