On the Decay Mode $B^{-}\to \hat{I}{¼}^{-}\bar{\hat{I}}{½}_{\hat{I}}¼{\hat{I}}^3$

Abstract

A QCD relativistic potential model is employed to compute the decay rate and the photon spectrum of the process $B^{-}\to \hat{I}{¼}^{-}{\bar{\hat{I}}½}_{\hat{I}}¼{\hat{I}}^3$. The result $\mathcal{B}(B^{-}\to \hat{I}{¼}^{-}{\bar{\hat{I}}½}_{\hat{I}}¼{\hat{I}}^3)\simeq 1\times 10^{-6}$ confirms the enhancement of this decay channel with respect to the purely leptonic mode, and supports the proposal of using this process to access relevant hadronic quantities such as the $B$-meson leptonic decay constant and the CKM matrix element $V_{ub}$.

LaTex, 9 pages, 2 uuencoded postscript figures