Top Quark Polarization and Spin Correlation in the Littlest Higgs Model with T-Parity at the ILC

作     者：杨炳方 李向东 

作者机构：College of Physics & Information EngineeringHenan Normal University Basic Teaching DepartmentJiaozuo University Academic Affair OfficeJiaozuo University 

出 版 物：《Communications in Theoretical Physics》 (理论物理通讯（英文版）)

年 卷 期：2013年第59卷第1期

页      面：87-94页

核心收录：

学科分类：07[理学] 070202[理学-粒子物理与原子核物理] 0702[理学-物理学] 

主　　题：top quark polarization spin correlation 

摘      要：In the framework of the littlest Higgs model with T-parity （LHT）, we study the top quark spin correlation and polarization at the International Linear Collider （ILC）. We find that the top quark polarization asymmetry δPt and the left-right asymmetry δALR can respectively reach -35% and -37.5% for s = 500 GeV and s = 1000 GeV via e＋e- collision, which can reach the observable level at the ILC. By contrast, the spin correlation δC is smaller. The correlation behaviors of these observables at the e＋e- collision and the yy, collision will be helpful to distinguish different models and test the LHT model at the ILC.