@Article{Camara_etal2023,
author="C{\^a}mara, H. B.
and Joaquim, F. R.
and Valle, J. W. F.",
title="Dark-sector seeded solution to the strong CP problem",
journal="Physical Review D",
year="2023",
publisher="Amer Physical Soc",
volume="108",
number="9",
pages="095003--6pp",
abstract="We propose a novel realization of the Nelson-Barr mechanism {\textquoteleft}{\textquoteleft}seeded{\textquoteright}{\textquoteright} by a dark sector containing scalars and vectorlike quarks. Charge parity (CP) and a Z8 symmetry are spontaneously broken by the complex vacuum expectation value of a singlet scalar, leaving a residual Z2 symmetry that stabilizes dark matter (DM). A complex Cabibbo-Kobayashi-Maskawa matrix arises via one-loop corrections to the quark mass matrix mediated by the dark sector. In contrast with other proposals where nonzero contributions to the strong CP phase arise at the one-loop level, in our case this occurs only at two loops, enhancing naturalness. Our scenario also provides a viable weakly interacting massive particle scalar DM candidate.",
optnote="WOS:001115232100004",
optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=5840), last updated on Tue, 19 Dec 2023 08:04:49 +0000",
issn="2470-0010",
doi="10.1103/PhysRevD.108.095003",
opturl="https://arxiv.org/abs/2303.00705",
opturl="https://doi.org/10.1103/PhysRevD.108.095003",
language="English"
}