2009/05/31 by Shmuel Nussinov, Lian-Tao Wang, Itay Yavin · 6 citations
Computer Science · Physics and Astronomy · #Computational Physics and Python Applications #Dark Matter and Cosmic Phenomena #Particle physics theoretical and experimental studies #astro-ph.HE #hep-ph
paper · pdf · doi:10.1088/1475-7516/2009/08/037
published as JCAP 0908:037,2009 · 19 pages, 7 figures, published version. Cosmetic changes to figures and some discussions clarified. Conclusions unchanged
openalex publication_date 2009/08/27 · arxiv created 2009/09/02 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/30
We consider the capture of dark matter in the Sun by inelastic scattering against nuclei as in the inelastic dark matter scenario. We show that, assuming a WIMP-nucleon cross-section of σ n = 10 −40 cm 2 the resulting capture rate and density are sufficiently high so that current bounds on the muon neutrino flux from the Sun rule out any appreciable annihilation branching ratio of WIMPs into W + W − , Z 0 Z 0 , τ + τ − , t and neutrinos. Slightly weaker bounds are also available for annihilations into b and c . Annihilations into lighter particles that may produce neutrinos, such as μ + μ − , pions and kaons are unconstrained since those stop in the Sun before decaying. Interestingly enough, this is consistent with some recent proposals motivated by the PAMELA results for the annihilation of WIMPs into light bosons which subsequently decay predominantly into light leptons and pions.