International Journal of Physics | Vol. 3, No. 8, August 2012 | pp. 59–66
DOI: 10.46882/2012/IJP/000028
Research Article
Title: High-Energy Cosmogenic Neutrino Flux Anomalies and Dark Matter Decay Channels
Names of Authors: E. C. Vance¹, F. E. Colombo²
Authors’ Affiliations: ¹Department of Physics, University of California, Berkeley, California 94720, USA; ²Istituto Nazionale di Fisica Nucleare, Sezione di Roma, 00185 Rome, Italy
Abstract: High-energy neutrino telescopes collect vital data that can reveal physics signatures extending beyond the established Standard Model boundaries. This paper examines recent high-energy cosmogenic neutrino flux measurements that show statistical deviations in the energy range spanning 1.0 PeV to 10.0 PeV. We explore a theoretical model where these flux anomalies originate from the slow, non-thermal decay of heavy dark matter particles. These dark matter entities are hypothesized to reside within the galactic halo with an estimated mass scale of M = 20 PeV. Our calculated results match the observed isotropic neutrino background data closely. This match is achieved by setting the dark matter lifetime parameter at approximately τ = 3.5 * 10²⁸ seconds. The primary decay pathway analyzed involves a direct coupling to active neutrinos and standard Higgs bosons. This channel yields a distinctive monochromatic spectral peak superimposed over the continuous astrophysical power-law background spectrum. This specific decay topology produces a distinct flavor ratio balance at Earth detectors. The calculated flavor ratio matches the expected standard statistical proportion of νe : νμ : ντ = 1 : 1 : 1 due to long-baseline neutrino oscillation mechanics. This work establishes tighter constraints on the coupling parameters governing interactions between dark sector matter and standard leptons.
Keywords: Cosmogenic neutrinos; dark matter decay; galactic halo; standard model; neutrino telescope; flavor oscillation
Manuscript Timeline: Received: May 11, 2012; Revised: June 27, 2012; Accepted: July 11, 2012; Published: August 14, 2012
Citation: Vance, E. C., & Colombo, F. E. (2012). High-Energy Cosmogenic Neutrino Flux Anomalies and Dark Matter Decay Channels. International Journal of Physics, 3(8), 59–66.
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