High Energy Physics - Phenomenology
[Submitted on 29 Jun 2005 (v1), last revised 11 Mar 2010 (this version, v5)]
Title:Spectra of neutrinos from dark matter annihilations
View PDFAbstract: We study the fluxes of neutrinos from annihilations of dark matter particles in the Sun and the Earth. We give the spectra of all neutrino flavors for the main known annihilation channels: nu-antinu, b-bbar, tau-taubar, c-cbar, light quarks, ZZ, W^+W^-. We present the appropriate formalism for computing the combined effect of oscillations, absorptions, nu_tau-regeneration. Total rates are modified by an O(0.1--10) factor, comparable to astrophysical uncertainties, that instead negligibly affect the spectra. We then calculate different signal topologies in neutrino telescopes: through-going muons, contained muons, showers, and study their capabilities to discriminate a dark matter signal from backgrounds. We finally discuss how measuring the neutrino spectra can allow to reconstruct the fundamental properties of the dark matter: its mass and its annihilation branching ratios.
Submission history
From: Marco Cirelli [view email][v1] Wed, 29 Jun 2005 17:04:57 UTC (487 KB)
[v2] Fri, 4 Nov 2005 14:31:49 UTC (488 KB)
[v3] Fri, 27 Jul 2007 14:08:17 UTC (515 KB)
[v4] Thu, 27 Sep 2007 14:21:18 UTC (516 KB)
[v5] Thu, 11 Mar 2010 15:02:29 UTC (926 KB)
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