2004/01/31 by A. Bottino, F. Donato, Fiorenza Donato +2
Physics and Astronomy · #Astrophysics #Astrophysics and Cosmic Phenomena #Dark matter #Gaugino #Grand Unified Theory #Muon #Neutralino #Neutrino #Neutrino Physics Research #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Supersymmetry #astro-ph #hep-ex #hep-ph
paper · pdf · doi:10.1103/physrevd.70.015005
published as Phys.Rev. D70 (2004) 015005 · 17 pages, 1 tables and 5 figures, typeset with ReVTeX4. The paper may also be found at http://www.to.infn.it/~fornengo/papers/indirect04.ps.gz or through http://www.astroparticle.to.infn.it/. Limit from BR(Bs--> mu+ mu-) added
arxiv created 2004/04/27 · openalex publication_date 2004/07/27 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We examine indirect signals produced by neutralino self-annihilations, in the galactic halo or inside celestial bodies, in the frame of an effective minimal supersymmetric standard model without gaugino-mass unification at a grand unification scale. We compare our theoretical predictions with current experimental data of gamma rays and antiprotons in space and of upgoing muons at neutrino telescopes. Results are presented for a wide range of the neutralino mass, although our discussions are focused on light neutralinos. We find that only the antiproton signal is potentially able to set constraints on very low-mass neutralinos, below 20 GeV. The gamma-ray signal, both from the galactic center and from high galactic latitudes, requires significantly steep profiles or substantial clumpiness in order to reach detectable levels. The upgoing muon signal is largely below experimental sensitivities for the neutrino flux coming from the Sun; for the flux from the Earth an improvement of about one order of magnitude in experimental sensitivities (with a low energy threshold) can make accessible neutralino masses close to O, Si and Mg nuclei masses, for which resonant capture is operative.