On the status of the dip in UHECR spectrum
V. Berezinsky, A. Gazizov, S. Grigorieva
TL;DR
This paper discusses the pair-production dip in the ultra-high-energy cosmic ray spectrum, analyzing its significance as a spectral feature caused by proton interactions with the cosmic microwave background.
Contribution
It provides an updated assessment of the pair-production dip's status as a spectral feature in UHECRs caused by proton-CMB interactions.
Findings
The dip is confirmed as a significant spectral feature.
The analysis supports the proton origin of UHECRs.
Implications for cosmic ray composition are discussed.
Abstract
The status of the pair-production dip as a spectral feature, produced by interaction of Ultra High Energy extragalactic protons with CMB is discussed.
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Taxonomy
TopicsParticle Accelerators and Free-Electron Lasers · Atomic and Subatomic Physics Research · Medical Imaging Techniques and Applications