Year: 2025
Type: conference-paper
Abstract: The cosmic neutrino background is a prediction of standard cosmology but remains undetected due to the extremely low energies involved. By elastic scattering on cosmic-ray nuclei, these relic neutrinos can be upscattered to ultra-high energies observable by current neutrino telescopes such as the IceCube Neutrino Observatory and the Pierre Auger Observatory. Earlier calculations only took into account the elastic scattering on the proton component and ignored the effect of coherent elastic neutrino-nucleus scattering on heavier nuclei. In this contribution, we study the flux of cosmic-ray-boosted relic neutrinos, including coherent scattering on nuclei, and use the current upper limits to constrain the cosmic neutrino background density.
DOI: 10.22323/1.501.1222
Authors: Baobiao Yue, Alexander Sandrock, Jiajie Zhang, Jiajun Liao
Institutions: University of Wuppertal, Sun Yat-sen University
Language: English
Topic: Neutrino Physics Research
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
OpenAlex ID: W4414512131
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