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- W4367189887 abstract "In this article, we examine the Standard Model extended with a $Y=0$ Higgs triplet and a real singlet. We consider the Higgs triplet to be odd under the $Z_2$ symmetry, and hence the lightest stable particle from the inert triplet becomes the dark matter candidate, whereas the real singlet is considered to be even under the $Z_2$ symmetry. A dimension-5 effective term is introduced with the help of a real singlet, which breaks the CP symmetry and gives an additional source of CP-violation in the fermion sector. The phase transition proceeds in two-steps, with the symmetry breaking in the singlet direction occurring first and later leading to the usual electroweak symmetry breaking minima, while electroweak baryogenesis is associated with the second step. The parameters chosen for the electroweak phase transition are found to be consistent with the Planck scale stability and the perturbativity using two-loop $beta$-functions. The DM mass bound for inert triplet, i.e., 1.2 TeV (below which it is under abundance), also comes out to be consistent with the strongly first-order phase transition, which was not possible solely with inert triplet. The upper bound on the triplet mass comes out to be $leq 3.8$ TeV, which satisfies the strongly first-order phase transition. This particular benchmark point also satisfies the correct baryon asymmetry of the Universe $(6.13 times 10^{-11})$, and the gravitational wave spectrum also lies within the detectable frequency range of LISA $(6.978 times 10^{-4} - 1.690 times 10^{-2} )$ Hz and BBO $(2.80times 10^{-3}-1.096)$ Hz experiments." @default.
- W4367189887 created "2023-04-28" @default.
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- W4367189887 date "2023-04-26" @default.
- W4367189887 modified "2023-10-05" @default.
- W4367189887 title "Exploring CP-violation in $Y=0$ inert triplet with real singlet" @default.
- W4367189887 doi "https://doi.org/10.1103/physrevd.108.055025" @default.
- W4367189887 hasPublicationYear "2023" @default.
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