Study of electroweak vacuum stability from extended Higgs portal of dark matter and neutrinos

Purusottam Ghosh (Department of Physics, Indian Institute of Technology Guwahati, 781039 Assam, India) ; Abhijit Kumar Saha (Department of Physics, Indian Institute of Technology Guwahati, 781039 Assam, India) ; Arunansu Sil (Department of Physics, Indian Institute of Technology Guwahati, 781039 Assam, India)

We investigate the electroweak vacuum stability in an extended version of the Standard Model that incorporates two additional singlet scalar fields and three right-handed neutrinos. One of these extra scalars plays the role of dark matter, while the other scalar not only helps make the electroweak vacuum stable but also opens up the low-mass window of the scalar singlet dark matter (<500 GeV). We consider the effect of large neutrino Yukawa coupling on the running of Higgs quartic coupling. We have analyzed the constraints on the model and identified the range of parameter space that is consistent with the neutrino mass, appropriate relic density, and direct search limits from the latest XENON 1T preliminary result as well as realized the stability of the electroweak vacuum up to the Planck scale.

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      "source": "APS", 
      "value": "We investigate the electroweak vacuum stability in an extended version of the Standard Model that incorporates two additional singlet scalar fields and three right-handed neutrinos. One of these extra scalars plays the role of dark matter, while the other scalar not only helps make the electroweak vacuum stable but also opens up the low-mass window of the scalar singlet dark matter (<math><mrow><mo>&lt;</mo><mn>500</mn><mtext> </mtext><mtext> </mtext><mi>GeV</mi></mrow></math>). We consider the effect of large neutrino Yukawa coupling on the running of Higgs quartic coupling. We have analyzed the constraints on the model and identified the range of parameter space that is consistent with the neutrino mass, appropriate relic density, and direct search limits from the latest XENON 1T preliminary result as well as realized the stability of the electroweak vacuum up to the Planck scale."
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Published on:
26 April 2018
Publisher:
APS
Published in:
Physical Review D , Volume 97 (2018)
Issue 7
DOI:
https://doi.org/10.1103/PhysRevD.97.075034
arXiv:
1706.04931
Copyrights:
Published by the American Physical Society
Licence:
CC-BY-4.0

Fulltext files: