Skip to main content

Lund University Publications

LUND UNIVERSITY LIBRARIES

The dark phases of the N2HDM

Engeln, Isabell ; Ferreira, Pedro ; Mühlleitner, M. Margarete ; Santos, Rui and Wittbrodt, Jonas LU (2020) In Journal of High Energy Physics 2020(8).
Abstract

We discuss the dark phases of the Next-to-2-Higgs Doublet model. The model is an extension of the Standard Model with an extra doublet and an extra singlet that has four distinct CP-conserving phases, three of which provide dark matter candidates. We discuss in detail the vacuum structure of the different phases and the issue of stability at tree-level of each phase. Taking into account the most relevant experimental and theoretical constraints, we found that there are combinations of measurements at the Large Hadron Collider that could single out a specific phase. The measurement of h125 → γγ together with the discovery of a new scalar with specific rates to τ+τ− or γγ could exclude some phases and... (More)

We discuss the dark phases of the Next-to-2-Higgs Doublet model. The model is an extension of the Standard Model with an extra doublet and an extra singlet that has four distinct CP-conserving phases, three of which provide dark matter candidates. We discuss in detail the vacuum structure of the different phases and the issue of stability at tree-level of each phase. Taking into account the most relevant experimental and theoretical constraints, we found that there are combinations of measurements at the Large Hadron Collider that could single out a specific phase. The measurement of h125 → γγ together with the discovery of a new scalar with specific rates to τ+τ− or γγ could exclude some phases and point to a specific phase.

(Less)
Please use this url to cite or link to this publication:
author
; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Beyond Standard Model, Higgs Physics
in
Journal of High Energy Physics
volume
2020
issue
8
article number
85
publisher
Springer
external identifiers
  • scopus:85089749912
ISSN
1126-6708
DOI
10.1007/JHEP08(2020)085
language
English
LU publication?
yes
id
f2d5a5c5-4a82-43ef-8de1-b61bc8bc615c
date added to LUP
2020-09-08 13:54:49
date last changed
2024-04-03 11:17:00
@article{f2d5a5c5-4a82-43ef-8de1-b61bc8bc615c,
  abstract     = {{<p>We discuss the dark phases of the Next-to-2-Higgs Doublet model. The model is an extension of the Standard Model with an extra doublet and an extra singlet that has four distinct CP-conserving phases, three of which provide dark matter candidates. We discuss in detail the vacuum structure of the different phases and the issue of stability at tree-level of each phase. Taking into account the most relevant experimental and theoretical constraints, we found that there are combinations of measurements at the Large Hadron Collider that could single out a specific phase. The measurement of h<sub>125</sub> → γγ together with the discovery of a new scalar with specific rates to τ<sup>+</sup>τ<sup>−</sup> or γγ could exclude some phases and point to a specific phase.</p>}},
  author       = {{Engeln, Isabell and Ferreira, Pedro and Mühlleitner, M. Margarete and Santos, Rui and Wittbrodt, Jonas}},
  issn         = {{1126-6708}},
  keywords     = {{Beyond Standard Model; Higgs Physics}},
  language     = {{eng}},
  number       = {{8}},
  publisher    = {{Springer}},
  series       = {{Journal of High Energy Physics}},
  title        = {{The dark phases of the N2HDM}},
  url          = {{http://dx.doi.org/10.1007/JHEP08(2020)085}},
  doi          = {{10.1007/JHEP08(2020)085}},
  volume       = {{2020}},
  year         = {{2020}},
}