中文摘要：

对双重重子产生机制的研究有助于更好地研究微扰和非微扰QCD理论。对γγ对撞机上双重重子Ξbb的产生做了进一步研究,考虑了bb处于色三重态和色六重态的共同贡献。结果发现：质心系能量在91-1 000 Ge V变动时,Ξbb的产生率会随着质心系能量的提高而降低。但是由于积分亮度的不同,不同对撞能量下Ξbb产生的事例数大致相同。选择合适初态粒子束的极化度能有效提高Ξbb的产生率,在某些能量对撞点,初始态粒子束的极化度可以将Ξbb的产生率提高17%左右。

英文摘要：

The research on doubly heavy baryons can offer good opportunities to study perturbative or non-perturbative QCD. The production of the doubly heavy baryon Ξbbis investigated at γγ collider. The contributions of both color triplet and sextet have been considered. Between 91 Ge V and 1000 Ge V,the total cross sections of Ξbbreduce as the collision energies raise up. However,the events of Ξbbproduction at different CM energies are generally the same due to different luminosities. Research results indicate that the initial beam polarization can effectively raise the production rate of Ξbb. At some collision points,the production rate of Ξbbcan be increased about 17% with an appropriate choice of the initial beam polarization.