Search for a cosmologically relevant boson in muon decay
Search for a cosmologically relevant boson in muon decay
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DOI：
10.1103/physrevd.103.052007
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发表时间：
2020-12
期刊：
影响因子：
--
通讯作者：
J. Collar
中科院分区：
文献类型：
--
作者：
J. Collar
根据当今的锗探测器技术，我们回顾了寻找轻子风味破坏衰变$\mu^{+}\!\!\rightarrow \!e^{+} X^{0}$的实验，并着眼于长寿命，缓慢移动的大质量玻色子$X^{0}$可能对宇宙产生影响的场景。一大片有趣的、未开发的参数空间非常接近衰变的运动学极限，被发现在一个新的提议的搜索范围内。可以研究$X^{0}$在过去和现在时代的一些可能的作用。
Experiments looking for a lepton flavor-violating decay $\mu^{+}\!\!\rightarrow \!e^{+} X^{0}$ are reviewed in light of present-day germanium detector technology, with an eye on scenarios where a long-lived, slow-moving massive boson $X^{0}$ might have a cosmological impact. A broad swath of interesting, unexplored parameter space very close to the kinematic limit of the decay is found to be within the reach of a new proposed search. A number of possible roles for $X^{0}$ in past and present epochs can be investigated.