We present the predictions of ISGW2, an update of the ISGW quark model for semileptonic meson decays. The updated model incorporates a number of features which should make it more reliable, including the constraints imposed by Heavy Quark Symmetry, hyperfine distortions of wave-functions, and form factors with more realistic high recoil behaviors. It has been nearly ten years since the ISGW mod...

In light of the recent experimental results on decays B+ → fX(1300)K and B±(0) → J/ψK X (1430) from Belle, we study the B → P (V )S type decays, B±(0) → f0(1370)K and B±(0) → J/ψK 0 (1430), in comparison with the B → P (V )T type decays, B±(0) → f2(1270)K and B±(0) → J/ψK 2 (1430). We calculate the BRs for these decays by using the form factors obtained in the ISGW2 model [the improved version ...

We re-analyze hadronic decays of B mesons to a pseudoscalar (P ) and a tensor meson (T ), or a vector meson (V ) and a tensor meson, through a b → c transition. We discuss possible large uncertainties to branching ratios (BR’s) of the relevant modes, mainly arising from uncertainties to the hadronic form factors for the B → T transition. The BR’s and CP asymmetries for B → PT and V T decays are...

We re-analyze hadronic decays of B mesons to a pseudoscalar (P ) and a tensor meson (T ), or a vector meson (V ) and a tensor meson, through a b → c transition. We discuss possible large uncertainties to branching ratios (BR’s) of the relevant modes, mainly arising from uncertainties to the hadronic form factors for the B → T transition. The BR’s and CP asymmetries for B → PT and V T decays are...

We have obtained the differential decay rate and calculated the branching ratios of the exclusive semileptonic decays B(D) → Xlν, where X is a p-wave meson, using the nonrelativistic ISGW quark model. Our results are compared with the predictions of the ISGW2 model. We have computed some branching ratios that were not reported or were reported with 0.00 in this model. For example, we find that ...