The littlest Higgs model with T-parity and some lepton flavor violation decay processes  

作　　者：YUE ChongXing,MA Wei,ZHANG TingTing,LIU Wei & LIU JinYan Department of Physics,Liaoning Normal University,Dalian 116029,China 

出　　处：《Science China(Physics,Mechanics & Astronomy)》2010年第11期1968-1974,共7页中国科学：物理学、力学、天文学（英文版）

基　　金：supported in part by the National Natural Science Foundation of China (Grant No.10975067);Specialized Research Fund for the Doctoral Program of Higher Education (SRFDP) (Grant No.200801650002);the Natural Science Foundation of the Liaoning Scientific Committee (Grant No.20082148);the Foundation of Liaoning Educational Committee (Grant No.2007T086)

摘　　要：The new particles predicted by the littlest Higgs model with T-parity (called LHT model) can induce the lepton flavor violation (LFV) couplings at the one-loop level,which can add contributions to some LFV processes.Taking into account the constraints of the experimental data on the relevant free parameters,we calculate the branching ratios of the LFV decay processes Z → l ˉl and τ-→μ-P 1 P 2 with P 1 P 2 = π + π-,K + K-,and K0 ˉK 0 in the context of this new physics model.We find that the LHT model can indeed make significant contributions to some of these LFV decay processes.The Z factory option for the future high energy e + e-collider experiments will give severe constraints on the LHT model.The new particles predicted by the littlest Higgs model with T-parity (called LHT model) can induce the lepton flavor violation (LFV) couplings at the one-loop level,which can add contributions to some LFV processes.Taking into account the constraints of the experimental data on the relevant free parameters,we calculate the branching ratios of the LFV decay processes Z → l ˉl and τ-→μ-P 1 P 2 with P 1 P 2 = π + π-,K + K-,and K0 ˉK 0 in the context of this new physics model.We find that the LHT model can indeed make significant contributions to some of these LFV decay processes.The Z factory option for the future high energy e + e-collider experiments will give severe constraints on the LHT model.

关 键 词：LITTLEST HIGGS model LEPTON FLAVOR VIOLATION branching ratios 

分 类 号：O572.323[理学—粒子物理与原子核物理]