Neutrino signals from solar neutralino annihilations in anomaly mediated supersymmetry breaking model

2008/03/31 by Jia Liu, Peng‐Fei Yin, Peng-fei Yin +1
Physics and Astronomy · #Dark Matter and Cosmic Phenomena #Neutrino Physics Research #Particle physics theoretical and experimental studies #astro-ph #hep-ph

paper · pdf · doi:10.1103/physrevd.77.115014

published as Phys.Rev.D77:115014,2008 · 26 pages, 11 figures;V2 references added;V3 value of m_t,g-2(muon),b->sgamma updated;V4 version to appear in PRD, a typo corrected

openalex publication_date 2008/06/16 · arxiv created 2008/06/17 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

The lightest neutralino, as the dark matter candidate, can be gravitationally captured by the Sun. In this paper, we studied the high energy neutrino signals from solar neutralino annihilations in the core of the Sun in the anomaly mediated supersymmetry breaking (AMSB) model. Based on the event-by-event Monte Carlo simulation code WimpSim, we studied the detailed energy and angular spectrum of the final muons at large neutrino telescope IceCube. More precisely, we simulated the processes since the production of neutrino via neutralino annihilation in the core of the Sun, neutrino propagation from the Sun to the Earth, as well as the converting processes from neutrino to muon. Our results showed that in the AMSB model it is possible to observe the energetic muons at IceCube, provided that the lightest neutralino has a relatively large Higgsino component, as a rule of thumb N₁₃²+N₁₄²>4%, or equivalently, \ensuremathσ_SD>10^\ensuremath-5 pb. Especially, for our favorable parameters the signal annual events can reach 102, and the statistical significance can reach more than 20. We pointed out that the energy spectrum of muons may be used to distinguish among the AMSB model and other supersymmetry breaking scenarios.

Citations

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