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  Superheavy Gravitinos and Ultra-High Energy Cosmic Rays

Meissner, K. A., & Nicolai, H. (2019). Superheavy Gravitinos and Ultra-High Energy Cosmic Rays. Journal of Cosmology and Astroparticle Physics, 2019(9): 041. doi:10.1088/1475-7516/2019/09/041.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0003-FDDA-B Version Permalink: http://hdl.handle.net/21.11116/0000-0004-D201-D
Genre: Journal Article

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 Creators:
Meissner, Krzysztof A., Author
Nicolai, Hermann1, Author              
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1Quantum Gravity & Unified Theories, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, ou_24014              

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Free keywords: Astrophysics, High Energy Astrophysical Phenomena, astro-ph.HE,High Energy Physics - Theory, hep-th
 Abstract: We argue that the superheavy gravitinos that we had previously proposed as candidates for Dark Matter can offer a possible explanation for the ultra-high energy cosmic ray (UHECR) events observed at the Pierre Auger Observatory, via gravitino anti-gravitino annihilation in the `skin' of neutron stars. The large mass and strong interactions of these particles, together with their stability against decays into standard matter are essential for the proposed explanation to work. In particular, it ensues that UHECR events can be understood to originate from neutron stars inside a GKZ horizon of 50 Mpc. The composition of neutron stars near their surface could play a crucial role in explaining the presence of heavy ions in these events. If confirmed, the present results can be taken as evidence for the fundamental ansatz towards unification on which they are based.

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 Dates: 2019-06-172019
 Publication Status: Published in print
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 Identifiers: arXiv: 1906.07262
URI: http://arxiv.org/abs/1906.07262
DOI: 10.1088/1475-7516/2019/09/041
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Title: Journal of Cosmology and Astroparticle Physics
Source Genre: Journal
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Pages: - Volume / Issue: 2019 (9) Sequence Number: 041 Start / End Page: - Identifier: -