Probe new physics in leptonic Bc decays at CERN LHC

With respect to large samples of Bc mesons expected to be produced at CERN Large Hadron Collider (LHC) and the large branching ratios Br(Bc → τν) and Br(Bc → μν), we suggest that Bc purely leptonic decays could offer an unique also the structure of charged weak currents.