Collider signatures of dark CP-violation

Abstract

We study an extension of the Standard Model (SM) in which two copies of the SM-Higgs doublet which do not acquire a vacuum expectation value, and hence are {\it inert}, are added to the scalar sector. The lightest particle from the inert sector, which is protected from decaying to SM particles through the conservation of a $Z_2$ symmetry, is a viable dark matter candidate. We allow for CP-violation in this extended dark sector and evaluate the $ZZZ$ vertex and its CP-violating form factor in several benchmark scenarios. We provide collider signatures of this dark CP-violation in the form of potentially observable asymmetries and cross sections for the $f\bar{f}\to Z^{\ast }\to ZZ$ process at both leptonic and hadronic machines.

arXiv comment24 pages, 7 figures

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Cited by in corpus (5)

• Dark CP-violation through the $Z$-portal
• P-even, CP-violating Signals in Scalar-Mediated Processes
• Complementary Probes of Two-component Dark Matter
• CP-violating inflation and its cosmological imprints
• Baryogenesis from a CP-violating inflation