Probing Intrinsic Charm with Semileptonic B Decays

We discuss semileptonic B decays of the form B → J/Ψ eν X as possible probes for intrinsic charm. We calculate the leading order perturbative contribution to the process B− → J/Ψ e−νe and find a branching ratio of 6.8 × 10−10. We estimate the intrinsic charm contribution and find that it could be larger, although its precise value cannot be calculated. Because the kinematically allowed upper limit for these processes is of order 10−7, and because these channels have a very clean experimental signature, we suggest that they should be studied at the B factories and at hadron colliders.