微中子質量及XENON1T實驗異常現象之研究與探討

XENON1T 實驗室報告了去年電子反沖事件，反沖能量在 1-7 keV 範圍內，峰值約為2.4keV。我們應用E.Ma在2006年提出的單環輻射蹺蹺板模型來解釋XENON1T異常。該模型包含兩個限制，導致兩個不同的暗物質候選者，即純量粒子η0 和右手微中子Nk，這取決於它們的質量大小。我們確認了其中一個限制可以用可行的湯川耦合常數來解釋XENON1T的電子反沖事件同時也可以給出微小的微中子質量,且其他參數亦符合現行實驗給出的限制。

關鍵字

微中子質量；暗物質； XENON1T實驗異常

並列摘要

XENON1T collaboration has reported an excess of electron recoil events last year over the background in the recoil energy in a range 1-7 keV, peaked around 2.4 keV. We apply the one-loop radiative seesaw model which was proposed by E.Ma in 2006 to provide an explanation for the XENON1T anomaly. The model consists two limits that lead to two different dark matter candidates, namely scalar particle η0 and right-handed neutrino Nk respectively, depending on their mass scales. We confirm that one of two limits can be simultaneously reconcile the XENON1T anomaly and the tiny neutrino masses with the feasible Yukawa coupling constant. Furthermore, the other parameters are also in the allowed region by experimental limitations.

並列關鍵字

neutrino mass ； dark matter ； XENON1T anomaly

參考文獻

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微中子質量及XENON1T實驗異常現象之研究與探討

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