arXiv:0908.3530·v1·High Energy Physics — Phenomenology
Cosmic Ray Spectra in Nambu-Goldstone Dark Matter Models
Masahiro Ibe🇺🇸 · Hitoshi Murayama🇺🇸 · Satoshi Shirai🇯🇵 · Tsutomu T. Yanagida🇯🇵
Abstract
We discuss the cosmic ray spectra in annihilating/decaying Nambu-Goldstone dark matter models. The recent observed positron/electron excesses at PAMELA and Fermi experiments are well fitted by the dark matter with a mass of 3TeV for the annihilating model, while with a mass of 6 TeV for the decaying model. We also show that the Nambu-Goldstone dark matter models predict a distinctive gamma-ray spectrum in a certain parameter space.
Comments: 16 pages, 4 figures