Status of particle physics solutions to the UHECR puzzle
High Energy Physics - Phenomenology
2009-11-10 v1 Astrophysics
Abstract
The status of solutions to the ultra-high energy cosmic ray puzzle that involve particle physics beyond the standard model is reviewed. Signatures and experimental constraints are discussed for most proposals like the Z burst model and topological defects (both allowed only as subdominant contribution), supermassive dark matter (no positive evidence from its key signatures galactic anisotropy and photon dominance), strongly interacting neutrinos or new primaries (no viable models known), and violation of Lorentz invariance (possible).
Keywords
Cite
@article{arxiv.hep-ph/0406174,
title = {Status of particle physics solutions to the UHECR puzzle},
author = {M. Kachelriess},
journal= {arXiv preprint arXiv:hep-ph/0406174},
year = {2009}
}
Comments
15 pages, 8 eps figures, contribution to the special issue "Ultimate energy particles in the Universe" of Comptes Rendues (eds. M. Boratav, G. Sigl)