科研之友
微信
新浪微博
Facebook
分享链接
摘要
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(+) -> t (t) over bar. 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' approximate to root S. With reasonable values of the Z' mass M-Z' and the coupling parameter k(1), Z' exchange can generate large corrections to the spin correlation observable.
- 出版日期2007
- 单位辽宁师范大学
