Warm Dark Matter from keVins

Дата и время публикации : 2012-05-02T20:00:03Z

Авторы публикации и институты :
Stephen F. King
Alexander Merle

Ссылка на журнал-издание: Ссылка на журнал-издание не найдена
Коментарии к cтатье: 32 pages, 9 figures, 2 tables
Первичная категория: hep-ph

Все категории : hep-ph, astro-ph.CO

Краткий обзор статьи: We propose a simple model for Warm Dark Matter (WDM) in which two fermions are added to the Standard Model: (quasi-) stable "keVins" (keV inert fermions) which account for WDM and their unstable brothers, the "GeVins" (GeV inert fermions), both of which carry zero electric charge and lepton number, and are (approximately) "inert", in the sense that their only interactions are via suppressed couplings to the Z. We consider scenarios in which stable keVins are thermally produced and their abundance is subsequently diluted by entropy production from the decays of the heavier unstable GeVins. This mechanism could be implemented in a wide variety of models, including E_6 inspired supersymmetric models or models involving sterile neutrinos.

Category: Physics