Bc photoproduction at HERA collider
  The B_c photoproduction at HERA has been considered in the frame work of the pQCD. The estimated value of the total production cross section of Bc+, Bc*+, Bc- and Bc*- mesons is about 5 pb. Higher excitations yield about 30% to the total cross section. Thus for integrated HERA luminosity 1 fb-1 about 7000 Bc mesons will be produced. 
A.V.Berezhnoy and A.K.Likhoded