INDIRECT SEARCHES FOR DECAYING DARK MATTER

Author:

IBARRA ALEJANDRO1,TRAN DAVID2,WENIGER CHRISTOPH3

Affiliation:

1. Physik-Department, Technische Universität München, James-Franck-Straße 1, 85748 Garching, Germany

2. School of Physics and Astronomy, University of Minnesota, Tate Lab, 116 Church Street SE, Minneapolis, MN 55455, USA

3. GRAPPA Institute, University of Amsterdam, Science Park 904, 1098XH Amsterdam, Netherlands

Abstract

Numerous observations point towards the existence of an unknown elementary particle with no electromagnetic interactions, a large population of which was presumably produced in the early stages of the history of the Universe. This so-called dark matter has survived until the present day, accounting for the 26% of the present energy budget of the Universe. It remains an open question whether the particles comprising the dark matter are absolutely stable or whether they have a finite but very long lifetime, which is a possibility since there is no known general principle guaranteeing perfect stability. In this paper, we review the observational limits on the lifetime of dark matter particles with mass in the GeV–TeV range using observations of the cosmic fluxes of antimatter, gamma-rays and neutrinos. We also examine some theoretically motivated scenarios that provide decaying dark matter candidates.

Publisher

World Scientific Pub Co Pte Lt

Subject

Astronomy and Astrophysics,Nuclear and High Energy Physics,Atomic and Molecular Physics, and Optics

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