Search for proton decay into three charged leptons in 0.37 megaton-years exposure of the Super-Kamiokande
Search for proton decay into three charged leptons in 0.37 megaton-years exposure of the Super-Kamiokande
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在超级神冈探测器 0.37 兆吨年的曝光中寻找质子衰变为三个带电轻子
DOI：
10.1103/physrevd.101.052011
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发表时间：
2020
影响因子：
5
通讯作者：
Tanaka M et al. (The Super-Kamiokande Collaboration)
中科院分区：
文献类型：
--
作者：
S. Shiina ， T. Shima ， B. Xu ， T. Kaneko ， T. Kato;Tanaka M et al. (The Super-Kamiokande Collaboration)
利用Super-Kamiokande收集的数据，对质子衰变为三带电轻子进行了研究。电子、μ子和它们的反粒子在电荷守恒下的所有可能组合都被认为是衰变模式。没有显着过量的事件已被发现超过背景，并已获得的质子寿命除以分支比的下限。在90%置信水平下，限值范围在-之间，比以前实验的限值提高了一个数量级以上。第一个限制已经为模式设置。
A search for proton decay into three charged leptons has been performed by usingof data collected in Super-Kamiokande. All possible combinations of electrons, muons, and their antiparticles consistent with charge conservation were considered as decay modes. No significant excess of events has been found over the background, and lower limits on the proton lifetime divided by the branching ratio have been obtained. The limits range betweenandat 90% confidence level, improving by more than an order of magnitude upon limits from previous experiments. A first limit has been set for themode.