Ultra-high energy LSP

Details Ultra-high energy LSP Ultra-high energy LSP

1997-09-29

arxiv.org/abs/hep-ph/9709485v1

Phys.Lett. B422 (1998) 163-170

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, 4 ps figures, Latex2e

Scientific paper

10.1016/S0370-2693(98)00068-9

We argue that the lightest supersymmetric particles (LSP) can be produced with extremely high energies $E\gsim 10^{10}$ GeV in the Universe at the present epoch. Their most probable sources are decaying superheavy particles produced by topological defects or as relic Big Bang particle. We discuss the mechanisms of production of LSP at ultra-high energies (UHE) and the interaction of the UHE LSP with matter. The most attention is given to the neutralino as LSP, although the gluino is also considered as a phenomenological possibility.

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