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Title: Vacuum stability in inert higgs doublet model with right-handed neutrinos

Abstract

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. These bounds are found to be relevant only for low-scale seesaw scenarios with relatively large Yukawa couplings. 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.

Authors:
 [1]; ORCiD logo [1];  [2];  [3]
  1. Indian Inst. of Technology (IIT), Telengana (India)
  2. Washington Univ., St. Louis, MO (United States). McDonnell Center for the Space Sciences. Dept. of Physics
  3. Indian Inst. of Technology (IIT), Delhi (India)
Publication Date:
Research Org.:
Washington Univ., St. Louis, MO (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1803204
Grant/Contract Number:  
SC0017987
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Journal of High Energy Physics (Online)
Additional Journal Information:
Journal Volume: 2020; Journal Issue: 8; Journal ID: ISSN 1029-8479
Publisher:
Springer Berlin
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; Physics

Citation Formats

Jangid, Shilpa, Bandyopadhyay, Priyotosh, Dev, P. S. Bhupal, and Kumar, Arjun. Vacuum stability in inert higgs doublet model with right-handed neutrinos. United States: N. p., 2020. Web. doi:10.1007/jhep08(2020)154.
Jangid, Shilpa, Bandyopadhyay, Priyotosh, Dev, P. S. Bhupal, & Kumar, Arjun. Vacuum stability in inert higgs doublet model with right-handed neutrinos. United States. https://doi.org/10.1007/jhep08(2020)154
Jangid, Shilpa, Bandyopadhyay, Priyotosh, Dev, P. S. Bhupal, and Kumar, Arjun. 2020. "Vacuum stability in inert higgs doublet model with right-handed neutrinos". United States. https://doi.org/10.1007/jhep08(2020)154. https://www.osti.gov/servlets/purl/1803204.
@article{osti_1803204,
title = {Vacuum stability in inert higgs doublet model with right-handed neutrinos},
author = {Jangid, Shilpa and Bandyopadhyay, Priyotosh and Dev, P. S. Bhupal and Kumar, Arjun},
abstractNote = {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. These bounds are found to be relevant only for low-scale seesaw scenarios with relatively large Yukawa couplings. 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 = {10.1007/jhep08(2020)154},
url = {https://www.osti.gov/biblio/1803204}, journal = {Journal of High Energy Physics (Online)},
issn = {1029-8479},
number = 8,
volume = 2020,
place = {United States},
year = {Fri Aug 28 00:00:00 EDT 2020},
month = {Fri Aug 28 00:00:00 EDT 2020}
}

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