arXiv (OAI Expanded)
open access
Caught by its own light: Wimpzillas, the LHAASO knee and the diffuse $γ$-ray sky
cosmology-and-nongalactic-astrophysicshigh-energy-astrophysical-phenomenahigh-energy-physics-phenomenology
We use the proton spectrum resolved by LHAASO across the knee to test superheavy dark matter in the nucleon channel at PeV energies. Both the hardening at $0.34$ PeV and the knee at $3.3$ PeV are reproduced by nucleons from a relic of mass $5\cdot 10^{7}$ GeV decaying in the Galactic halo, with the
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