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τ^-→μ^-Ф(ω)衰变与新物理企鹅图效应

The τ^-→μ^-Ф(ω)Decays and the Penguins Effects of New Physics
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摘要 τ-→μ-Ф(ω)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.在双黑格斯二重态模型Ⅲ(2HDMⅢ)下对这些衰变的企鹅图效应作了研究,结果表明在一定的参数范围内,企鹅图的贡献可将衰变分支比提高到目前的实验上限,其中光子企鹅图的贡献占主要地位. The semileptonic decays τ^-→μ^-φ(ω) could be sensitive probe for new physics scenarios with lepton flavor violation(LFV). The research investigates the penguin diagrams effects to these decays in 2HDM Ⅲ. The results show that the photon pengiuns are dominated in penguin contributions and in reasonable parameters space, these decay branching ratios could be enhanced to the present experimental values.
出处 《河南师范大学学报(自然科学版)》 CAS CSCD 北大核心 2009年第1期56-58,共3页 Journal of Henan Normal University(Natural Science Edition)
基金 国家自然科学基金(10547110) 河南省教育厅自然科学研究计划资助项目(2007140007)
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
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参考文献9

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