Searches for atmospheric long-lived particles
Searches for atmospheric long-lived particles
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DOI：
10.1007/jhep02(2020)190
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发表时间：
2019-10
影响因子：
5.4
通讯作者：
C. Argüelles;P. Coloma;P. Hernandez;V. Muñoz
中科院分区：
文献类型：
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作者：
C. Argüelles;P. Coloma;P. Hernandez;V. Muñoz
在标准模型的扩展中预测了长寿命粒子，这些扩展涉及相对较轻但相互作用非常弱的扇区。在本文中，我们考虑的可能性，这些粒子中的一些产生于大气宇宙射线阵雨，和他们的衰变拦截中微子探测器，如冰立方或超级神冈。我们介绍了方法，并评估了这些搜索在各种情况下的灵敏度，包括在大质量中微子模型中重中性轻子的扩展，具有额外U（1）规范对称性的模型，以及U（1）B − L模型中两者的组合。我们的结果显示为相应的长寿命粒子的生产率和寿命的函数。
Long-lived particles are predicted in extensions of the Standard Model that involve relatively light but very weakly interacting sectors. In this paper we consider the possibility that some of these particles are produced in atmospheric cosmic ray showers, and their decay intercepted by neutrino detectors such as IceCube or Super-Kamiokande. We present the methodology and evaluate the sensitivity of these searches in various scenarios, including extensions with heavy neutral leptons in models of massive neutrinos, models with an extra U (1) gauge symmetry, and a combination of both in a U (1) B− L model. Our results are shown as a function of the production rate and the lifetime of the corresponding long-lived particles.