The production of Ξ_bb at the photon collider

The inclusive production of the doubly heavy baryon Ξ_bb is investigated with a polarized and unpolarized photon collider. The bb pair in both a color triplet and sextet has been considered to transform into Ξ_bb. The results indicate that the contribution from the color sextet is about 8% for Ξ_bb production. For the international linear collider collision energy ranging from 91 GeV to 1000 GeV, the total cross section of Ξ_bb shows a downtrend, i.e., the production of Ξ_bb has the maximal rate at √S = 91 GeV. Our results indicate that the initial beam polarization may be an important asset for the production of Ξ_bb. At some collision point, the production rate of Ξ_bb can be increased by about 17% with an appropriate choice of the initial beam polarization. (authors)