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

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 pr...

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Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1103/PhysRevD.100.021302

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Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Role:
Author
Publisher:
American Physical Society
Journal:
Physical Review D More from this journal
Volume:
100
Issue:
2
Article number:
021302
Publication date:
2019-07-17
Acceptance date:
2019-04-08
DOI:
EISSN:
2470-0029
ISSN:
2470-0010
Language:
English
Keywords:
Pubs id:
958255
Local pid:
pubs:958255
Deposit date:
2021-08-04

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