Non-universal gauge boson Z′ and the spin correlation of top quark pair production at e−e+ colliders
Non-universal gauge boson Z′ and the spin correlation of top quark pair production at e−e+ colliders
复制标题
DOI：
10.1088/0954-3899/34/1/010
复制
发表时间：
2006-12
期刊：
影响因子：
--
通讯作者：
C. Yue;Li-Na Wang
中科院分区：
文献类型：
--
作者：
C. Yue;Li-Na Wang
In the off-diagonal basis, we discuss the contributions of the non-universal gauge boson Z' predicted by the topcolour-assisted technicolour (TC2) model to the spin configurations and the spin correlation observable of the top quark pair production via the process e - e + → tt. Our numerical results show that the cross sections of production for the like-spin states, which vanish in the standard model, can be significantly large as M Z' ≈ √S. With reasonable values of the Z' mass Mz and the coupling parameter k i , Z' exchange can generate large corrections to the spin correlation observable.
