Dark matter and localised fermions from spherical orbifolds?

作者：Cacciapagli Giacomo^*; Deandrea Aldo; Deutschmann Nicolas

来源：The Journal of High Energy Physics, 2016, 2016(4): 083.

DOI：10.1007/JHEP04(2016)083

• Phenomenology of Field Theories in Higher Dimensions

We study a class of six-dimensional models based on positive curvature surfaces (spherical 2-orbifolds) as extra-spaces. Using the Newman-Penrose formalism, we discuss the particle spectrum in this class of models. The fermion spectrum problem, which has been addressed with flux compactifications in the past, can be avoided using localised fermions. In this framework, we find that there are four types of geometry compatible with the existence of a stable dark matter candidate and we study the simplest case in detail. Using the complementarity between collider resonance searches and relic density constraints, we show that this class of models is under tension, unless the model lies in a funnel region characterised by a resonant Higgs s-channel in the dark matter annihilation.

• 出版日期2016-4-14