Calculation of the Isgur-Wise function from a light-front constituent quark model

Abstract

The space-like elastic form factor of heavy-light pseudoscalar mesons is investigated within a light-front constituent quark model in order to evaluate the Isgur-Wise form factor. The relativistic composition of the constituent quark spins is properly taken into account using the Melosh rotations, and various heavy-meson wave function are considered, including the eigenfunctions of an effective light-front mass operator reproducing meson mass spectra. It is shown that in a wide range of values of the recoil the Isgur-Wise form factor exhibits a moderate dependence upon the choice of the heavy-meson wave function and is mainly governed by the effects of the confinement scale.

To appear in Phys. Lett. B

References in corpus (4)

• Semileptonic Meson Decays in the Quark Model: An Update
• Nucleon and pion electromagnetic form factors in a light-front constituent quark model
• Electromagnetic form factors of the $\rho$ meson in a light-front constituent quark model
• Radiative $\pi \rho$ and $\pi \omega$ transition form factors in a light-front constituent quark model

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