味普适TC2模型与轻子味破坏衰变Z→l_il_j

Lepton Flavor Violating Z→l_il_jin Flavor-Universal Topcolor-Assisted Technicolor Models

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摘要讨论计算了味普适TC2模型预言的额外U(1)规范玻色子Z′对轻子味破坏 (LFV)衰变Z→lilj 过程的贡献 .结果表明Z′对此过程有较大贡献 ,在合理的参数取值范围内 ,Z→τμ和Z→τe的分支比可以接近实验测量值的上限 ,而Z→μe过程的实验测量值上限给味普适TC2模型自由参数以严格的限制 . In the context of flavor-universal topcolor-assisted technicolor (TC2) models, we study the lepton flavor violating (LFV) processes Z→l il j. We find that the extra U(1) gauge boson Z′ can give significantly contributions to these LFV processes. With reasonable values of the parameters, the branching ratios of the processes Z→τμ and Z→τe can approach the experimental upper limits. The indirect bound on the process Z→μe can give a severe constraint on the flavor-universal TC2 models.

作者岳崇兴赵晔李虹赵启

机构地区辽宁师范大学物理系河南师范大学物理与信息工程学院平顶山广播电视大学

出处《高能物理与核物理》 SCIE CAS CSCD 北大核心 2003年第12期1070-1073,共4页 High Energy Physics and Nuclear Physics

基金国家自然科学基金 ( 90 2 0 3 0 0 5 )资助~~

关键词味普适TC2模型轻子味破坏衰变中微子实验高能物理学超荷规范耦合常数规范玻色子味混合因子 flavor-universal topcolor-assisted technicolor (TC2) models, extra U(1) gauge bosons Z′, lepton flavor-violation decays

分类号 O572.3 [理学—粒子物理与原子核物理]

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1刘兰君,岳崇兴.TC2模型与轻子味破坏过程l_i→l_jν_l_l[J].高能物理与核物理,2004,28(5):475-478. 被引量：1
2徐洪霞,马丽,李作宏.Unparticle引起的轻子味破坏衰变[J].烟台大学学报（自然科学与工程版）,2010,23(1):9-14.
3王雯宇,王玉霞,熊兆华.Lepton Flavor Violating Z→e_I■_J in SO(3) Gauge Extension of SM[J].Communications in Theoretical Physics,2010(10):709-714.
4岳崇兴,张延明,刘兰君.Z′和τ的轻子味破坏衰变[J].高能物理与核物理,2003,27(7):564-566.

高能物理与核物理

2003年第12期

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味普适TC2模型与轻子味破坏衰变Z→l_il_j

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