Second dip as a signature of ultrahigh energy proton interactions with cosmic microwave background radiation

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dc.creatorBerezinsky, V.
dc.creatorGazizov, A.
dc.creatorKachelrieß, M.
dc.date2006-12-10
dc.date.accessioned2026-07-07T11:00:26Z
dc.date.available2026-07-07T11:00:26Z
dc.descriptionWe discuss as a new signature for the interaction of extragalactic ultrahigh energy protons with cosmic microwave background radiation a spectral feature located at $E=6.3\times 10^{19}$ eV in the form of a narrow and shallow dip. It is produced by the interference of $e^+e^-$-pair and pion production. We show that this dip and in particular its position are almost model-independent. Its observation by future ultrahigh energy cosmic ray detectors may give the conclusive confirmation that an observed steepening of the spectrum is caused by the Greisen-Zatsepin-Kuzmin effect.
dc.description4 pages, 3 figures, identical to publication in PRL
dc.identifierhttps://arxiv.org/abs/astro-ph/0612247
dc.identifierhttp://arxiv.org/abs/astro-ph/0612247
dc.identifierPhys.Rev.Lett.97:231101,2006
dc.identifierdoi:10.1103/PhysRevLett.92.231101
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/187678
dc.subjectAstrophysics
dc.titleSecond dip as a signature of ultrahigh energy proton interactions with cosmic microwave background radiation
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