QCD Sum Rules for the Λb Semileptonic Decay

We use the QCD Sum Rule approach to evaluate the form factors and decay rates of Λ _b -> Λ _c^ + + l + /line ν _l decay. This decay is represented by a three point function of the weak transition current and the interpolating fields of Λ_b and Λ_c. We calculate the theoretical part by performing the Operator Product Expantion of this three point function. In the phenomenological side, we use the experimental information of the decay amplitude. As usual we perform a Borel transform in these two sides in order to obtain the form factors. With this information we can obtain the decay rates. After the calculation of these quantities we compare our results with the experimental ones.