2010/05/31 by Marco Taoso, Fabio Iocco, Georges Meynet +4 · 2 citations
Chemistry · Physics and Astronomy · #Annihilation #Astrophysics #Chemistry #Convection #Coronal mass ejection #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Dark matter #Flux (metallurgy) #Mechanics #Neutrino #Neutrino oscillation #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Plasma #Solar core #Solar energetic particles #Solar mass #Solar neutrino #Stars #astro-ph.CO #hep-ph
paper · pdf · doi:10.1103/physrevd.82.083509
published as Phys.Rev.D82:083509,2010 · 14 pages, 8 figures. To appear in Phys.Rev.D
arxiv created 2010/09/07 · openalex publication_date 2010/10/08 · arxiv updated 2014/11/21 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We study the effect of dark matter (DM) particles in the Sun, focusing, in particular, on the possible reduction of the solar neutrinos flux due to the energy carried away by DM particles from the innermost regions of the Sun, and to the consequent reduction of the temperature of the solar core. We find that in the very low-mass range between 4 and 10 GeV, recently advocated to explain the findings of the DAMA and CoGent experiments, the effects on neutrino fluxes are detectable only for DM models with a very small, or vanishing, self-annihilation cross section, such as the so-called asymmetric DM models, and we study the combination of DM masses and spin-dependent cross sections which can be excluded with current solar neutrino data. Finally, we revisit the recent claim that DM models with large self-interacting cross sections can lead to a modification of the position of the convective zone, alleviating or solving the solar composition problem. We show that when the ``geometric'' upper limit on the capture rate is correctly taken into account, the effects of DM are reduced by orders of magnitude, and the position of the convective zone remains unchanged.