Distinguishing inert Higgs doublet and inert triplet scenarios

Jangid, Shilpa and Bandyopadhyay, Priyotosh (2020) Distinguishing inert Higgs doublet and inert triplet scenarios. The European Physical Journal C, 80 (8). ISSN 1434-6044

Full text not available from this repository. (Request a copy)


In this article we consider a comparative study between Type-I 2HDM and Y= 0 , SU(2) triplet extensions having one Z2-odd doublet and triplet that render the desired dark matter(DM). For the inert doublet model (IDM) either a neutral scalar or pseudoscalar can be the DM, whereas for inert triplet model (ITM) it is a CP-even scalar. The bounds from perturbativity and vacuum stability are studied for both the scenarios by calculating the two-loop beta functions. While the quartic couplings are restricted to 0.1 - 0.2 for a Planck scale perturbativity for IDM, these are much relaxed (0.8) for ITM. The RG-improved potentials by Coleman-Weinberg show the regions of stability, meta-stability and instability of the electroweak vacuum. The constraints coming from DM relic, the direct and indirect experiments like XENON1T, LUX and H.E.S.S., Fermi-LAT allow the DM mass ≳700,1176 GeV for IDM, ITM respectively. Though mass-splitting among Z2-odd particles in IDM is a possibility for ITM we have to rely on loop-corrections. The phenomenological signatures at the LHC show that the mono-lepton plus missing energy with prompt and displaced decays in the case of IDM and ITM can distinguish such scenarios at the LHC along with other complementary modes.

[error in script]
IITH Creators:
IITH CreatorsORCiD
Bandyopadhyay, Priyotoshhttp://orcid.org/0000-0003-0464-5116
Item Type: Article
Subjects: Physics
Divisions: Department of Physics
Depositing User: . LibTrainee 2021
Date Deposited: 30 Jun 2021 04:44
Last Modified: 30 Jun 2021 04:44
URI: http://raiith.iith.ac.in/id/eprint/8050
Publisher URL: http://doi.org/10.1140/epjc/s10052-020-8271-5
OA policy: https://v2.sherpa.ac.uk/id/publication/11219
Related URLs:

Actions (login required)

View Item View Item
Statistics for RAIITH ePrint 8050 Statistics for this ePrint Item