On Wigner Degeneracy in Elko theory: Hermiticity and Dark Matter
arXiv:2407.00126 · doi:10.1016/j.dark.2024.101774
Abstract
In this paper, we provide a set of Hermitian interactions for quantum fields based on Elko, considering the recent achievements concerning the most general form of singular spinors and Wigner degeneracy. We consider Hermiticity and renormalizability a criterion to define the derivative Elko-Higgs interaction as the suitable candidate for a dark coupling. Then, the free parameters of the model are fixed by cosmological constraints on the dark matter abundance, bounds on the Higgs invisible decays, and limits on the electron-dark matter scattering mediated by the Higgs.
arXiv comment16 pages, 2 figures
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