Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1999-03-26
Phys.Lett. B460 (1999) 461-466
Physics
High Energy Physics
High Energy Physics - Phenomenology
16 pages including 5 figures; version to be published in Phys. Lett. B
Scientific paper
10.1016/S0370-2693(99)00817-5
We present the analysis of exclusive $0^{-}$$\to$$0^{-}$ semileptonic heavy meson decays using the constituent quark model based on the light-front quantization. Our model is constrained by the variational principle for the well-known linear plus Coulomb interaction motivated by QCD. Our method of analytic continuation to obtain the weak form factors avoids the difficulty associated with the contribution from the nonvalence quark-antiquark pair creation. Our numerical results for the heavy-to-heavy and heavy-to-light meson decays are in a good agreement with the available experimental data and the lattice QCD results. In addition, our model predicts the two unmeasured mass spectra of $^{1}S_{0}(b\bar{b})$ and $^{3}S_{1}(b\bar{s})$ systems as $M_{b\bar{b}}$=9657 MeV and $M_{b\bar{s}}$= 5424 MeV.
Choi Ho-Meoyng
Ji Chueng-Ryong
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