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arXiv 0711.0733hep-phhep-ex
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电弱尺度镜像费米子,$μ\to e γ$和$τ\to μγ$

Electroweak-scale mirror fermions, $μ\to e γ$ and $τ\to μγ$

P. Q. Hung

摘要:

在弱电标度右手中微子模型中估计了轻子味破坏(LFV)过程$μ\to e γ$和$τ\to μγ$。分支比$B(μ\to e γ)< 1.2 \times 10^{-11}$、$B(τ\to μγ) < 6.8 \times 10^{-8}$(BaBar)和$< 4.5 \times 10^{-8}$(Belle)的当前界限对模型的参数施加了强约束。这个约束将低能稀有衰变过程与高能现象联系起来(例如,镜像带电轻子的衰变长度,这对于寻找电弱尺度右手中微子模型中存在的类似符号的双轻子事件非常重要)。

英文摘要:

The Lepton Flavour Violating (LFV) processes $μ\to e γ$ and $τ\to μγ$ are estimated in a model of electroweak-scale right-handed neutrinos. The present bounds on the branching ratios, $B(μ\to e γ)< 1.2 \times 10^{-11}$, $B(τ\to μγ) < 6.8 \times 10^{-8}$ (BaBar) and $< 4.5 \times 10^{-8}$ (Belle), puts strong constraints on the parameters of the model. This constraint links low energy rare decay processes to high-energy phenomena (e.g. decay lengths of the mirror charged leptons which are important in the search for the telltale like-sign dilepton events present in the model of electroweak-scale right-handed neutrinos).

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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