Flavor Changing Top Quark Decay and Bottom-Strange Production in the Littlest Higgs Model with T-parity  

作　　者：侯洪生 孙昊 周雅瑾 

机构地区：[1]Department of Physics, Hangzhou Normal University [2]School of Physics and Technology, University of Jinan [3]School of Physics, Shandong University

出　　处：《Communications in Theoretical Physics》2013年第4期443-450,共8页理论物理通讯（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant Nos.11105083,10947139,10947022,11105036,11147151, and 11205070;Shandong Province Natural Science Foundation under Grant No.ZR2012AQ017

摘　　要：Flavor changing effects on the processes t → cA, e^＋e^- → bs^-, e^＋e^- →bs^-h and pp → bs^- in the LHT model are investigated in this paper. We calculate the one-loop level contributions from the T-parity odd mirror fermions and gauge bosons. The results show that the top quark rare decay t --~ cA in the LHT model can be significantly enhanced relative to that in the SM. The bs^- production at linear colliders in the LHT model can enhance the SM cross section a lot and reach 0.1 fb in some parameter space allowed in the experiment. But the heavy gauge boson and mirror fermion loops have small contribution to the processes pp --~ 5~ and e＋e- →bs^-h. So the LHT effect on e^＋e^- → bs^- might be detected at future linear colliders, while it is too sma/l to be seen for the e^＋e^- →bs^-h and pp → bs^- processes at future linear colliders and LHC.

关 键 词：LHT FCNC 

分 类 号：O572.33[理学—粒子物理与原子核物理]