Radiative Corrections to e^+e^-→ Zh at Future Higgs Factory in the Minimal Dilaton Model  

作　　者：衡朝霞 李东玮 周海静 

机构地区：[1]Department of Physics, Henan Normal University [2]Department of Foundation, Henan Police College

出　　处：《Communications in Theoretical Physics》2015年第2期188-194,共7页理论物理通讯（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant No.11305050;by Specialized Research Fund for the Doctoral Program of Higher Education under Grant No.20124104120001

摘　　要：Abstract The minimal dilaton model （MDM） extends the Standard Model by one singlet scalar called dilaton andone top quark partner called t. In this work we investigate the t-induced radiative correction to the Higgs-strahlung production process e＋e^→ Zh at future Higgs factory. We first present the analytical calculations in detail and show how to handle the ultraviolet divergence. Then we calculate the correction numerically by considering the constraints from precision electroweak data. We find that, for sinθL=0.2 and mt= 1200 GeV, the correction is 0.26% and 2.1% for SE＋E = 240 GeV, 1 TeV respectively, and a larger value can be achieved as sin θL increases.

关 键 词：minimal dilaton model radiative corrections top quark partner 

分 类 号：O572.2[理学—粒子物理与原子核物理]