在中微子探测器中,核子分解成光新粒子
Julian Heeck1, Ian M Shoemaker2
1University of Virginia, Department of Physics, Charlottesville, Virginia 22904, USA.
Physical review letters
|September 26, 2025
概括
质子和中子分解成新的粒子X创造独特的实验特征. 大型水切伦科夫和跟踪探测器可以检测这些罕见事件,为基本物理提供新的见解.
科学领域:
- 粒子物理学 粒子物理学
- 天体物理学 天体物理学
- 核物理 核物理 核物理
背景情况:
- 质子和中子分解成新的光粒子 (X) 改变实验特征.
- 大型水切伦科夫探测器 (超级Kamiokande,超级Kamiokande) 和跟踪探测器 (JUNO,DUNE) 的互补性至关重要.
- 在相空间关闭附近的特定衰变模式 (p→l+X,p→π+X) 产生了切伦科夫值以下的带电粒子.
研究的目的:
- 为了研究核子衰变对实验签名的新光粒子的影响.
- 探索不同类型探测器在观察这些罕见事件方面的能力.
- 介绍核子分解成无菌中微子的模型及其随后的检测.
主要方法:
- 在各种探测器类型中分析质子和中子衰变特征.
- 模型核子分解成小于GeV的无菌中微子.
- 通过活性-无菌混合模拟无菌中性子的产生和衰变.
- 对超级Kamiokande和其他探测器的事件率估计.
主要成果:
- 产生切伦科夫值以下粒子的衰变对超级Kamiokande来说具有挑战性,但可以在JUNO和DUNE中检测到.
- 核子衰变可以产生大量的X粒子,在地下实验中可以检测到.
- 一个简单的模型预测了一个有希望的事件数量在超级Kamiokande在摇摆动机参数空间.
结论:
- JUNO和DUNE处于独特的位置,可以检测出特定的违反 baryons数的核子衰变特征.
- 拟议的模型为观测无菌中性子衰变提供了一条可行的途径.
- 这些研究提高了我们对基本粒子相互作用和早期宇宙的理解.
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