From a three-parameter fit to IceCube 12-year HESE data, the authors derive a superheavy dark matter mass of about 9.4 million GeV and a decay lifetime of about 4.2 times 10^28 seconds, with a leptonic branching fraction near 0.001.
Detailed analysis of the decay spectrum of a super-heavy x particle
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IceCube PeV neutrinos from heavy dark matter decay with 12 years HESE data
From a three-parameter fit to IceCube 12-year HESE data, the authors derive a superheavy dark matter mass of about 9.4 million GeV and a decay lifetime of about 4.2 times 10^28 seconds, with a leptonic branching fraction near 0.001.