The search for decaying Dark Matter

Abazajian, K.; Boyarsky, A.; Frenk, C.; Hansen, S.; den Herder, J. W.; Jonker, P.; Kouveliotou, C.; Lesgourgues, J.; Neronov, A.; Ohashi, T.; Paerels, F.; Paltani, Stéphane; Piro, L.; Pohl, Martin; Ruchayskiy, O.; Shaposhnikov, M.; Silk, J.; Valle, J.

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Title		The search for decaying Dark Matter
Authors		Abazajian, K. Boyarsky, A. Frenk, C. Hansen, S. den Herder, J. W. Jonker, P. Kouveliotou, C. Lesgourgues, J. Neronov, A. Ohashi, T. Paerels, F. Paltani, Stéphane Piro, L. Pohl, Martin Ruchayskiy, O. Shaposhnikov, M. Silk, J. Valle, J. show all authors [1 - 18]
Publication		ArXiv: Fundamental Physics Roadmap Advisory Team of ESA, 2009
Collection		astro-ph
Description		10 p.
Abstract		We propose an X-ray mission called Xenia to search for decaying superweakly interacting Dark Matter particles (super-WIMP) with a mass in the keV range. The mission and its observation plan are capable of providing a major break through in our understanding of the nature of Dark Matter (DM). It will confirm, or reject, predictions of a number of particle physics models by increasing the sensitivity of the search for decaying DM by about two orders of magnitude through a wide-field imaging X-ray spectrometer in combination with a dedicated observation program. The proposed mission will provide unique limits on the mixing angle and mass of neutral leptons, right handed partners of neutrinos, which are important Dark Matter candidates. The existence of these particles is strongly motivated by observed neutrino flavor oscillations and the problem of baryon asymmetry of the Universe. In super-WIMP models, the details of the formation of the cosmic web are different from those of LambdaCDM. The proposed mission will, in addition to the search for decaying Dark Matter, provide crucial insight into the nature of DM by studying the structure of the "cosmic web". This will be done by searching for missing baryons in emission, and by using gamma-ray bursts as backlight to observe the warm-hot intergalactic media in absorption.
Note		A white paper submitted in response to the Fundamental Physics Roadmap Advisory Team (FPR-AT) Call for White Papers
Full text		Report (Published version) (578 Kb) - Free access Other version: http://arxiv.org/abs/arXiv:0906.1788
Structures		Faculté des sciences / Section de physique / Département de physique nucléaire et corpusculaire
Citation (ISO format)		ABAZAJIAN, K. et al. The search for decaying Dark Matter. 2009 https://archive-ouverte.unige.ch/unige:41445