Dark top partner

Abstract

Composite Higgs models with extended symmetries can feature mesonic dark matter candidates. In fundamental CHMs, the origin of dark parity can be explained in the UV theory. Combined with top partial compositeness, this leads to non-chiral Yukawa interaction connecting mesonic DM with one dark top partner and one SM top. We examine the DM phenomenology in SU(6)/SO(6) and SU(6)/Sp(6) CHMs with the presence of dark top partners. Phenomenological constraints require the mass of top partner in even parity to be of the multi-TeV order.

arXiv comment34 pages, 2 figures and 4 tables; Add discussion of dark parity in the SU(N)xSU(N)/SU(N) realization; Change the definition of ChS with a minus sign; JHEP accepted version

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