Slope of the Isgur-Wise function in the heavy mass limit of quark models à la Bakamjian-Thomas

Details Slope of the Isgur-Wise function in the heavy mass limit of quark models à la Bakamjian-Thomas Slope of the Isgur-Wise function in the heavy mass limit of quark models à la Bakamjian-Thomas

1997-05-15

arxiv.org/abs/hep-ph/9705324v1

Phys.Lett. B408 (1997) 357-366

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages, Latex, AMS-LaTeX

Scientific paper

10.1016/S0370-2693(97)00826-5

The slope of the Isgur-Wise function for ground state mesons is evaluated for the heavy mass limit of quark models \`a la Bakamjian-Thomas, which has been previously discussed by us in general terms. A full calculation in various spectroscopic models with relativistic kinetic energy gives a rather stable result $\rho^2 \approx 1$, much lower than previous estimates. Attention is paid to a careful comparison of this result with the ones of QCD fundamental methods (lattice QCD, QCD sum rules) and with experimental data.

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