Abstract： Based on the littlest Higgs model, we investigate the spin correlation of the top quark pair production via the process e+ e- → tt at the high energy linear e+ e- collider (ILC) with a centre-of-mass energy √S=800GeV. Our numerical results show that the gauge boson ZH generates very small corrections to the spin correlation observable C in all the parameter space allowed by the electroweak data. However, with reasonable values of the free parameters, the value of the relative correction parameter R’BH=(CBH-CSM)/CSM can reach 10%, which might be detected in future ILC experiments.
YUE Chong-Xing;WANG Lei;WANG Li-Na;ZHANG Yan-Ming. Littlest Higgs Model and Spin Correlation of Top Quark Production at High Energy Linear e+ e- Colliders[J]. 中国物理快报, 2006, 23(9): 2379-2382.
YUE Chong-Xing, WANG Lei, WANG Li-Na, ZHANG Yan-Ming. Littlest Higgs Model and Spin Correlation of Top Quark Production at High Energy Linear e+ e- Colliders. Chin. Phys. Lett., 2006, 23(9): 2379-2382.
2006, Vol. 23 
