What type of study is this?

This is a Quantitative Study study.

October 8, 2025Open Access

What KM3-230213A event may tell us about the neutrino mass and dark matter

Key Points

Detection of ultrahigh-energy neutrinos may implicate a decaying right-handed neutrino dark matter model.
Mass estimation indicates this dark matter candidate is around 440 PeV, aligning with observed relic abundance.
Produced dark matter via freeze-in expands potential parameter space accessible to gravitational wave detectors.
Findings emphasize the role of multimessenger astronomy in exploring new physics scenarios for dark matter.

Abstract

Within the general U(1) scenario, we demonstrate that the ultrahigh-energy neutrinos recently detected by KM3NeT could originate from a decaying right-handed neutrino dark matter, with a mass of 440 PeV. Considering dark matter production via freeze-in, we delineate the parameter space that satisfies the observed relic abundance and also lies within the reach of multiple gravitational wave detectors. Our study provides a testable new physics scenario, enabled by multimessenger astronomy.

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Cite This Study

Barman et al. (Mon,) studied this question.

synapsesocial.com/papers/68e5c1c36950a706b22b59e7 https://doi.org/https://doi.org/10.1103/t58k-sjq5

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