Wino Dark Matter Under Siege

Дата и время публикации : 2013-07-15T20:00:01Z

Авторы публикации и институты :
Timothy Cohen
Mariangela Lisanti
Aaron Pierce
Tracy R. Slatyer

Ссылка на журнал-издание: JCAP 1310 (2013) 061
Коментарии к cтатье: 29 pages plus references, 9 figures, 2 appendices; v2 references added; v3 minor changes, journal version
Первичная категория: hep-ph

Все категории : hep-ph, astro-ph.CO

Краткий обзор статьи: A fermion triplet of SU(2)_L – a wino – is a well-motivated dark matter candidate. This work shows that present-day wino annihilations are constrained by indirect detection experiments, with the strongest limits coming from H.E.S.S. and Fermi. The bounds on wino dark matter are presented as a function of mass for two scenarios: thermal (winos constitute a subdominant component of the dark matter for masses less than 3.1 TeV) and non-thermal (winos comprise all the dark matter). Assuming the NFW halo model, the H.E.S.S. search for gamma-ray lines excludes the 3.1 TeV thermal wino; the combined H.E.S.S. and Fermi results completely exclude the non-thermal scenario. Uncertainties in the exclusions are explored. Indirect detection may provide the only probe for models of anomaly plus gravity mediation where the wino is the lightest superpartner and scalars reside at the 100 TeV scale.

Category: Physics