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Determining the fraction of cosmic-ray protons at ultra-high energies with cosmogenic neutrinos

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arxiv 1901.01899 v2 pith:W6NFQPLS submitted 2019-01-07 astro-ph.HE

Arjen van Vliet , Rafael Alves Batista , Jörg R. Hörandel This is my paper · ORCID
classification astro-ph.HE
keywords constrainfractionneutrinosprotonscosmogenicdiscussenergieslimits
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abstract

Cosmogenic neutrinos are produced when ultra-high-energy cosmic rays (UHECRs) interact with cosmological photon fields. Limits on the diffuse flux of these neutrinos can be used to constrain the fraction of protons arriving at Earth with energies $E_{p} \gtrsim 30$ EeV, thereby providing constraints on the composition of UHECRs without fully relying on hadronic interaction models. We show to which extent current neutrino telescopes already constrain this fraction of protons and discuss the prospects for next-generation detectors to further constrain it. Additionally, we discuss the implications of these limits for several popular candidates for UHECR source classes.

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Widen the Resonance at Ultra-High Energies: Novel Probes of Neutrino Self-interactions in the High-Mass Regime

    hep-ph 2025-11 conditional novelty 6.0 of 10

    If one neutrino species in the cosmic neutrino background is still relativistic today, UHE neutrinos scattering off it can resonantly disappear over a broad energy range, and GRAND could detect that dip to probe neutr...

  2. Clash of the Titans: ultra-high energy KM3NeT event versus IceCube data

    astro-ph.HE 2025-02 conditional novelty 6.0 of 10

    A single KM3NeT event above 10 PeV is in 2.9 to 3.6 sigma tension with IceCube's non-observation under all standard source models, pointing toward a new astrophysical source.

  3. Scrutinizing the cosmogenic origin of the KM3-230213A event: A Multimessenger Perspective

    astro-ph.HE 2025-07 conditional novelty 5.0 of 10

    A multimessenger transport calculation finds that KM3-230213A is plausibly cosmogenic only if it originates from hard-spectrum protons above the ankle with source evolution close to (1+z)^3.

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