Quark model study of the semileptonic B → π decay.

Authors :: Albertus, C.
Flynn, J. M.
Hernández, E.
Nieves, J.
Verde-Velasco, J. M.
Source :: AIP Conference Proceedings; 2007, Vol. 892 Issue 1, p312-314, 3p, 2 Graphs
Publication Year :: 2007
Abstract: The semileptonic decay B → πlνl is studied starting from a simple quark model and taking into account the effect of the B* resonance. A novel, multiply subtracted, Omnès dispersion relation has been implemented to extend the predictions of the quark model to all physical q2 values. We find |Vub| = 0.0034 ± 0.0003(exp.) ± 0.0007(theory), in good agreement with experiment. © 2007 American Institute of Physics [ABSTRACT FROM AUTHOR]