Indirect dark matter searches as a probe of degenerate particle spectra

Дата и время публикации : 2011-12-21T20:59:24Z

Авторы публикации и институты :
Masaki Asano
Torsten Bringmann
Christoph Weniger

Ссылка на журнал-издание: Physics Letters B 709 (2012), pp. 128-132
Коментарии к cтатье: 6 pages, 4 figures; minor updates to match the published version
Первичная категория: hep-ph

Все категории : hep-ph, astro-ph.CO

Краткий обзор статьи: We consider the possibility that the cosmological dark matter consists of particles very close in mass to new colored particles below the TeV scale. While such a scenario is inherently difficult to directly confirm at colliders, we find that indirect dark matter searches may be a powerful alternative. In particular, we show that in this case dark matter annihilation to quark-quark-gluon final states can give rise to significant antiproton (but also gamma-ray) fluxes, and compare the resulting constraints to bounds from direct searches at LEP, the Tevatron and the LHC. For supersymmetric neutralinos degenerate with squarks, e.g., antiprotons can give rise to more stringent constraints for masses below around 45-80 GeV.

Category: Physics