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Search for Radiative Decays of Cosmic Background Neutrino using Cosmic Infrared Background Energy Spectrum

Matsuura, Shuji; Kim, Shin-Hong; Takemasa, Ken-ichi +1 more

We propose to search for the neutrino radiative decay by fitting a photon energy spectrum of the cosmic infrared background to a sum of the photon energy spectrum from the neutrino radiative decay and a continuum. By comparing the present cosmic infrared background energy spectrum observed by AKARI and Spitzer to the photon energy spectrum expecte…