摘要
In the parameter space allowed by the electroweak precision measurement data, we consider the contributions of the new particles predicted by the littlest Higga model to the Higgs hoson associated production with top quark pair in the future high energy linear e^＋e^- collider （ILU）. We find that the contributions mainly come from the new gauge bosons ZH and BH. For reasonable values of the free parameters, the absolute value of the relative correction parameter δσ/σ^SM can be signiticanly large, which might be observed in the future ILU experiment with √S = 800 GeV.
基金
The project supported in part by the Program for New Century Excellent Talents in Universities under Grant No, NCET-04-0290, Nations/Natural Science Foundation of China under Grant Nos. 90203005 and 1047S037, and the Natural Science Foundation of Lisoning Science Committee under Grant No. 20032101
