U(1)_χ, Seesaw Dark Matter, and Higgs Decay

2018/10/15 by Ma, Ernest
#FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph)

paper · doi:10.48550/arxiv.1810.06506

Abstract

It has recently been pointed out that the underlying symmetry of dark matter may well be U(1)_χ (coming from SO(10) → SU(5) × U(1)_χ) with the dark parity of any given particle determined by (-1)^Q_χ+2j, where Q_χ is its U(1)_χ charge and j its spin angular momentum. Armed with this new insight, previous simple models of dark matter are reinterpreted, and a novel idea is proposed that light seesaw dark matter exists in analogy to light neutrinos and is produced by the rare decay of the standard-model Higgs boson.

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