双黑格斯二重态模型Ⅲ中的τ^-→μ^-P^0衰变

The τ^-→μ^-P^0 Decays in Two-Higgs-Doublet Model Ⅲ

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摘要 τ-→μ-P0衰变可用来探测超出标准模型的具有轻子味破缺(LFV)的新物理.我们在双黑格斯二重态模型Ⅲ(2HDMⅢ)下对这些衰变进行了研究,结果表明,参数|λuu|,|λdd|对Br(τ-→μ-P0)几乎无影响.在现有参数范围内,Br(τ-→μ-π0)不能达到实验上限,Br(τ-→μ-η(η′))能够达到甚至超过目前的实验上限.我们用现有的实验上限得到了|λτμ|和|λss|的关联关系:当参数|λτμ|在(10-210)内变化时,|λss|在(1-21)内变化. The semileptonic decays τ-→μ-P0 could be sensitive probe for new physics scenarios with lepton flavor violation（LFV）.These decays have been investigated.The results show that ｜λuu｜,｜λdd｜ have almost no significant effects on the values of Br（τ-→μ-P0）.Br（τ-→μ-π0） could not reach the experiment upper limit.While Br（τ-→μ-η（η′）） could reach and even exceed the experimental data.With the current experimental constraints,The research has obtained the correlation of ｜λτμ｜ and ｜λss｜ ∶｜λτμ｜-（10-210）,｜λss｜-（1-21）.

作者李文君许文娜杨海燕王长伟

机构地区河南师范大学物理与信息工程学院

出处《河南师范大学学报（自然科学版）》 CAS CSCD 北大核心 2012年第1期32-35,共4页 Journal of Henan Normal University(Natural Science Edition)

基金国家自然科学基金(11005033) 河南省教育厅自然科学研究计划(2011A140012)

关键词标准模型双黑格斯二重态模型Ⅲ 轻子味破缺 the standard model 2HDM Ⅲ lepton flavor violation

分类号 O572.241 [理学—粒子物理与原子核物理]

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参考文献11

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双黑格斯二重态模型Ⅲ中的τ^-→μ^-P^0衰变

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