Vacuum Stability in Inert Higgs Doublet Model with Right-handed Neutrinos
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...
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| creator | Jangid, Shilpa Bandyopadhyay, Priyotosh Dev, P S Bhupal Kumar, Arjun |
| description | 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. |
| doi_str_mv | 10.48550/arxiv.2001.01764 |
| format | Article |
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| subjects | Comparative studies Couplings Dark matter Large Hadron Collider Neutrinos Parameter identification Physics - High Energy Physics - Phenomenology Scalars Stability analysis |
| title | Vacuum Stability in Inert Higgs Doublet Model with Right-handed Neutrinos |
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