2011/09/13 by Yuji Kajiyama, Kajiyama, Yuji, Hiroshi Okada +3
Physics and Astronomy · #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #FOS: Physical sciences #Galaxies: Formation, Evolution, Phenomena #High Energy Astrophysical Phenomena (astro-ph.HE) #High Energy Physics - Phenomenology (hep-ph) #astro-ph.HE #hep-ph
paper · pdf · doi:10.48550/arxiv.1109.2722
13 pages, 1 table, 6 figures
arxiv created 2011/09/13 · openalex publication_date 2011/09/13 · arxiv updated 2011/09/14 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We try to interpret a very light dark matter with mass of 5~10 GeV which is in favor of the recent experiments reported by CoGeNT and DAMA, in a non-supersymmetric extension of radiative seesaw model with a family symmetry D6 x Z2 x Z2. We show that a D6 singlet real scalar field can be a promising dark matter candidate, and it gives the elastic cross section σ≃ 7x10-41 cm2 which is required by these experiments. Our dark matter interacts with a D6 singlet scalar Higgs boson, which couples only to quark sector. The dark matter-nucleon cross section and new decay mode h->DM DM can be large if the standard model Higgs boson h is light. The Higgs phenomenology is also discussed.