PSI脑磁图实验现状

Proceedings of The 21st international workshop on neutrinos from accelerators — PoS(NuFact2019) Pub Date : 2020-06-11 DOI:10.22323/1.369.0081

S. Mihara

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引用次数: 1

摘要

$\mu^+ \rightarrow e^+ \gamma$衰变是理解标准模型之外的物理的关键;如果这种衰变被发现，它将是新物理学的明确证据。如果它的分支比上限提高一个数量级，结果将新物理的类型限制在大约两倍大的能量尺度上。MEG实验及其升级版MEG II实验是利用瑞士Paul Scherrer研究所提供的强直流电介子束对$\mu^+ \rightarrow e^+ \gamma$衰变进行实验搜索。在本报告中，我们描述了MEG的结果，并报告了MEG II的制备状况。

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Status of MEG experiment at PSI

The $\mu^+ \rightarrow e^+ \gamma$ decay is a key to understand physics beyond the standard model; if the decay is discovered, it is a clear evidence of new physics. If its branching ratio upper limit is improved by one order of magnitude, the result restricts the type of new physics in about twice larger energy scale. The MEG experiment, and its upgrade MEG II experiment, are experimental searches for the $\mu^+ \rightarrow e^+ \gamma$ decay by using intense DC muon beam provided at Paul Scherrer Institute in Switzerland. In this presentation we describe the result of MEG and report the preparation status of MEG II.

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Proceedings of The 21st international workshop on neutrinos from accelerators — PoS(NuFact2019)

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