The Four Basic Ways of Creating Dark Matter Through a Portal

Дата и время публикации : 2011-12-02T16:07:29Z

Авторы публикации и институты :
Xiaoyong Chu
Thomas Hambye
Michel H. G. Tytgat

Ссылка на журнал-издание: Ссылка на журнал-издание не найдена
Коментарии к cтатье: 45 pages, 18 figures, Z -> DM DM decay contribution added, appendices added, figures added, version accepted in JCAP
Первичная категория: hep-ph

Все категории : hep-ph, astro-ph.CO

Краткий обзор статьи: We consider the possibility that along the thermal history of the Universe, dark matter (DM) would have been created from Standard Model particles, either through a kinetic mixing portal to an extra U(1) gauge field, or through the Higgs portal. Depending solely on the DM particle mass, on the portal and on the DM hidden sector interaction, we show how the observed DM relic density can be obtained. There are four possible freeze-in/reannihilation/freeze-out regimes, which together result in a simple characteristic relic density phase diagram, with the shape of a "Mesa". In the case of the kinetic mixing portal, we show that, unlike other freeze-in scenarios discussed in the literature, the freeze-in regime can be probed by forthcoming DM direct detection experiments. These results are well representative {of} any scenario where a DM hidden sector would be created out of the Standard Model {sector}.

Category: Physics