arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2209.02885hep-phhep-exnucl-ex
收藏

测试镓异常

Testing the Gallium Anomaly

Patrick Huber

AI总结:

本研究提出使用GAGG闪烁体探测$^{51}$Cr源产生的单能中微子,通过区分镓俘获与弹性散射事件,以独立方式在超过$5σ$水平上测试镓异常。

摘要:

我们研究在闪烁体实验中,通过镓俘获$^{51}$Cr放射性源产生的单能中微子来进行在线探测。我们发现掺铈的钆铝镓石榴石(GAGG)是一种合适的闪烁体,其按重量含约21%的镓,且具有高质量密度和光产额。结合高效的光探测系统,这允许对随后的锗衰变进行标记,从而清晰区分镓俘获与中微子-电子弹性散射事件。使用1.5吨闪烁体和10次源运行(每次3.4MCi),我们获得了纯度85%的约760个镓俘获事件和680,000个中微子-电子弹性散射事件,后者提供了独立于任何核物理的精确归一化。该配置将允许以独立方式在超过$5σ$水平上测试镓异常。

英文摘要:

We study the online detection by gallium capture of mono-energetic neutrinos produced by a $^{51}$Cr radioactive source in a scintillation experiment. We find that cerium-doped gadolinium aluminum gallium garnet (GAGG) is a suitable scintillator which contains about 21% of gallium per weight and has a high mass density and light yield. Combined with a highly efficient light detection system this allows tagging of the subsequent germanium decay and thus a clean distinction of gallium capture and elastic neutrino electron scattering events. With 1.5 tons of scintillator and 10 source runs of 3.4MCi, each, we obtain about 760 gallium capture events with a purity of 85% and 680,000 neutrino electron scattering events, where the latter provide a precise normalization independent of any nuclear physics. This configuration would allow to test the gallium anomaly at more than $5σ$ in an independent way.

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。

↑