Semileptonic decay of B^-_c into X(3930), X(3940), X(4160)

We study the semileptonic decay of B^-_c meson into anti νl^- and the isospin zero X(3930) (2⁺⁺), X(3940) (0⁺⁺), X(4160) (2⁺⁺) resonances. We look at the reaction from the perspective that these resonances appear as dynamically generated from the vector-vector interaction in the charm sector, and couple strongly to D* anti D* and D^*_s anti D_s^*. We also look into the B^-_c → anti ν_ll^-D* anti D* and B^-_c → anti ν_ll^-D^*_s anti D_s^* reactions close to threshold and relate the D* anti D* and D^*_s anti D_s^* mass distribution to the rate of production of the X resonances. (orig.)