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

Abstract

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 $1.5\times 10^8$ GeV to $5.2\times 10^9$ GeV with lifetime in the range: $1.42\times 10^{30}$ s to $5.4\times 10^{29}$ 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 $1.2\sigma$. Our results are applicable to any neutrinophilic SHDM models while evading gamma-ray constraints.

v2: 5+3 pages, 3+1 captioned figures, 1 table, version accepted for publication as a Letter in Phys. Rev. D; v3: updated to match published version in Phys. Rev. D

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Cited by in corpus (11)

• Cosmological Origin of the KM3-230213A event and associated Gravitational Waves
• Superheavy dark matter from the natural inflation in light of the highest-energy astroparticle events
• Cosmic-Ray Constraints on the Flux of Ultra-High-Energy Neutrino Event KM3-230213A
• Superheavy Supersymmetric Dark Matter for the origin of KM3NeT Ultra-High Energy signal
• Ultra High Energy Neutrino Event KM3-230213A as a Signal of Electroweak Vacuum Turbulence in Merging Black Hole Binaries
• Cosmogenic Origin of KM3-230213A: Delayed Gamma-Ray Emission from A Cosmic-Ray Transient
• Exploring ultra-high energy neutrino experiments through the lens of the transport equation
• LHAASO Galactic Plane $\gamma$-rays Strongly Constrain Heavy Dark Matter
• Linking the KM3-230213A Neutrino Event to Dark Matter Decay and Gravitational Wave signals
• KM3-230213A and IceCube Neutrino Events from Metastable Dark Matter of Primordial Black Hole Origin
• Superluminal constraints from ultra-high-energy neutrino events