Production of heavy quark bound states in rare exclusive decays of Higgs boson

The processes of pair production of S- and P- wave charmonium, as well as the production of the tetraquark (cc \bar{c} \bar{c}) in the Higgs boson decays are investigated within the framework of relativistic quark model. Relativistic decay amplitudes are constructed and decay widths are calculated taking into account relativistic corrections both in the decay amplitude and in the wave function of bound heavy quarks.