http://arxiv.org/abs/1911.12130
We propose a new non-thermal mechanism of dark matter production based on vacuum misalignment. A global $X$-charge asymmetry is generated at high temperatures, under which both the will-be Higgs and the dark matter are charged. At lower energies, the vacuum changes alignment and breaks the U(1)$_X$, leading to the emergence of the Higgs and of a fraction of charge asymmetry stored in the stable dark matter relic. This mechanism can be present in a wide variety of models based on vacuum misalignment, and we demonstrate it in a composite Higgs template model, where all the necessary ingredients are naturally present. A light pseudo-scalar is always predicted, with interesting implications for cosmology and future supernova observations.
C. Cai, H. Zhang, G. Cacciapaglia, et. al.
Thu, 28 Nov 19
59/70
Comments: 6 pages, 1 figure, 1 table
You must be logged in to post a comment.