The Production of $Ξ_{bb}$ at Photon Collider

The inclusive production of the doubly heavy baryon $Ξ_{bb}$ is investigated at polarized and unpolar- ized photon collider. bb pair in both color triplet and sextet have been considered to transform into $Ξ_{bb}$. The results indicate that the contribution from color sextet is about 8% for $Ξ_{bb}$ production. For the ILC collision energy ranging from 91GeV to 1000GeV, the total cross section of $Ξ_{bb}$ shows a downtrend, i.e., the production of $Ξ_{bb}$ has the maximal rate at $\sqrt S = 91GeV$. 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 about 17% with an appropriate choice of the initial beam polarization.

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