Bc production in Higgs boson decays

The B-c production rate in Higgs boson decays is evaluated in the nonrelativistic QCD framework. Given that the Higgs total decay width is about 4.20 MeV and the vector B-c(*) meson decays completely to the ground state, we find that the branching fraction of Bc meson production in Higgs decays is 8.50 x 10(-4), where both leading QCD and QED contributions are included. This process is hence detectable in the high-luminosity/-energy LHC. It is found that the coupling of Hb (b) over bar dominates the processes, and contributions from the triangle top-quark loop and other couplings (Hc (c) over bar, HWW and HZZ) are small. In confronting the quarkonia production, we find that the fraction rate of Bc production is more than an order of magnitude bigger than those of charmonium and bottomonium production in Higgs decays. Moreover, various uncertainties and differential distributions of the concerned processes are analyzed carefully.