QCD sum rules analysis of the rare $B_c \rar Xν\barν$ decays
arXiv:0805.2806 · doi:10.1140/epjc/s10052-008-0668-5
Abstract
Taking into account the gluon correction contributions to the correlation function, the form factors relevant to the rare $B_c \rar X ν\barν$ decays are calculated in the framework of the three point QCD sum rules, where $X$ stands for axial vector particle, $AV(D_{s1})$, and vector particles, $V(D^*,D^*_s)$. The total decay width as well as the branching ratio of these decays are evaluated using the $q^2$ dependent expressions of the form factors. A comparison of our results with the predictions of the relativistic constituent quark model is presented.
21 Pages, 2 Figures and 5 Tables