Vacuum Stability in Inert Higgs Doublet Model with Right-handed Neutrinos

Bandyopadhyay, Priyotosh and Dev, P S Bhupal and Jangid, Shilpa and et al, . (2020) Vacuum Stability in Inert Higgs Doublet Model with Right-handed Neutrinos.


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We analyze the vacuum stability in the inert Higgs doublet extension of the Standard Model (SM), augmented by right-handed neutrinos (RHNs) to explain neutrino masses at tree level by the seesaw mechanism. We make a comparative study of the high- and low-scale seesaw scenarios and the effect of the Dirac neutrino Yukawa couplings on the stability of the Higgs potential. Bounds on the scalar quartic couplings and Dirac Yukawa couplings are obtained from vacuum stability and perturbativity considerations. The regions corresponding to stability, metastability and instability of the electroweak vacuum are identified. These theoretical constraints give a very predictive parameter space for the couplings and masses of the new scalars and RHNs which can be tested at the LHC and future colliders. The lightest non-SM neutral CP-even/odd scalar can be a good dark matter candidate and the corresponding collider signatures are also predicted for the model.

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IITH Creators:
IITH CreatorsORCiD
Bandyopadhyay, Priyotosh
Item Type: Article
Subjects: Physics
Divisions: Department of Physics
Depositing User: Team Library
Date Deposited: 13 Jan 2020 11:34
Last Modified: 13 Jan 2020 11:34
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