Photonic production of Bc-mesons

The cross section of the γγ → Bc(Bc∗)bc process is calculated. It is shown that near threshold the pseudoscalar state production is much suppressed with respect to the vector one. At large energies their ratio becomes σ(Bc∗)σ(Bc) ∼ 4. The process of heavy quark recombination dominates in the production of Bc(Bc∗) states. The fragmentation process b → Bc comes into play at high pt values only, while its contribution remains nondominant.