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arXiv 2503.04464hep-phastro-ph.COastro-ph.HEhep-ex
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PeV中微子事件KM3-230213A的超重暗物质起源

Super heavy dark matter origin of the PeV neutrino event: KM3-230213A

Kazunori Kohri, Partha Kumar Paul, Narendra Sahu

AI总结:

本文提出KM3-230213A超高能中微子事件可能源于超重暗物质衰变为中微子和希格斯粒子,并推导出暗物质质量与寿命的严格约束范围,同时将KM3NeT与IceCube、Auger观测之间的紧张关系降至1.2σ以下。

摘要:

KM3NeT实验最近观测到的超高能中微子事件KM3-230213A为探索超越标准模型(SM)的物理提供了一个引人注目的途径。在本文中,我们探讨了一种最简单的可能性,即该事件源自超重暗物质(SHDM)的衰变。我们考虑了一个最小场景,其中SHDM衰变为中微子和标准模型希格斯粒子。我们推导了暗物质寿命作为暗物质质量函数的约束条件,确保与IceCube、Auger上限以及观测到的KM3-230213A事件和伽马射线约束保持一致。我们发现KM3-230213A对暗物质质量给出了严格的约束,质量范围从1.5×10^8 GeV到5.2×10^9 GeV,寿命范围为1.42×10^30秒到5.4×10^29秒。值得注意的是,在我们的SHDM场景中,KM3NeT观测结果与IceCube和Auger未观测到该事件之间的明显紧张关系可以降低到1.2σ以下。我们的结果适用于任何偏爱中微子的SHDM模型,同时规避伽马射线约束。

英文摘要:

The recent observation of the ultrahigh-energy neutrino event KM3-230213A by the KM3NeT experiment offers a compelling avenue to explore physics beyond the Standard Model (SM). In this paper, we explore a simplest possibility that this event originates from the decay of a super-heavy dark matter (SHDM). We consider a minimal scenario where the SHDM decays to neutrino and SM Higgs. We derive constraints on the DM lifetime as a function of DM mass, ensuring consistency with IceCube, Auger upper limits, and the observed KM3-230213A event, along with the gamma-ray constraints. We find that KM3-230213A gives stringent constraint on the DM mass ranging from $1.5\times10^8$ GeV to $5.2\times10^9$ GeV with lifetime in the range: $1.42\times10^{30}$ s to $5.4\times10^{29}$ s. Remarkably, in our SHDM scenario, the apparent tension between the KM3NeT observation and the nonobservation of this event by IceCube and Auger can be reduced to below $1.2σ$. Our results are applicable to any neutrinophilic SHDM models while evading gamma-ray constraints.

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。

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