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LHC Dark Matter Working Group: Next-generation spin-0 dark matter models

Tomohiro, A. ; Doglioni, Caterina LU and Zhou, C. (2020) In Physics of the Dark Universe 27.
Abstract
Dark matter (DM) simplified models are by now commonly used by the ATLAS and CMS Collaborations to interpret searches for missing transverse energy (ET miss). The coherent use of these models sharpened the LHC DM search program, especially in the presentation of its results and their comparison to DM direct-detection (DD) and indirect-detection (ID) experiments. However, the community has been aware of the limitations of the DM simplified models, in particular the lack of theoretical consistency of some of them and their restricted phenomenology leading to the relevance of only a small subset of ET miss signatures. This document from the LHC Dark Matter Working Group identifies an example of a next-generation DM model, called 2HDM+a, that... (More)
Dark matter (DM) simplified models are by now commonly used by the ATLAS and CMS Collaborations to interpret searches for missing transverse energy (ET miss). The coherent use of these models sharpened the LHC DM search program, especially in the presentation of its results and their comparison to DM direct-detection (DD) and indirect-detection (ID) experiments. However, the community has been aware of the limitations of the DM simplified models, in particular the lack of theoretical consistency of some of them and their restricted phenomenology leading to the relevance of only a small subset of ET miss signatures. This document from the LHC Dark Matter Working Group identifies an example of a next-generation DM model, called 2HDM+a, that provides the simplest theoretically consistent extension of the DM pseudoscalar simplified model. A comprehensive study of the phenomenology of the 2HDM+a model is presented, including a discussion of the rich and intricate pattern of mono-X signatures and the relevance of other DM as well as non-DM experiments. Based on our discussions, a set of recommended scans are proposed to explore the parameter space of the 2HDM+a model through LHC searches. The exclusion limits obtained from the proposed scans can be consistently compared to the constraints on the 2HDM+a model that derive from DD, ID and the DM relic density. © 2019 Elsevier B.V. (Less)
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Contribution to journal
publication status
published
subject
in
Physics of the Dark Universe
volume
27
article number
100351
publisher
Elsevier
external identifiers
  • scopus:85070383963
ISSN
2212-6864
DOI
10.1016/j.dark.2019.100351
language
English
LU publication?
yes
id
d25a7968-e58a-4591-863e-0707960f7374
date added to LUP
2019-09-16 12:43:54
date last changed
2023-04-09 23:16:40
@article{d25a7968-e58a-4591-863e-0707960f7374,
  abstract     = {{Dark matter (DM) simplified models are by now commonly used by the ATLAS and CMS Collaborations to interpret searches for missing transverse energy (ET miss). The coherent use of these models sharpened the LHC DM search program, especially in the presentation of its results and their comparison to DM direct-detection (DD) and indirect-detection (ID) experiments. However, the community has been aware of the limitations of the DM simplified models, in particular the lack of theoretical consistency of some of them and their restricted phenomenology leading to the relevance of only a small subset of ET miss signatures. This document from the LHC Dark Matter Working Group identifies an example of a next-generation DM model, called 2HDM+a, that provides the simplest theoretically consistent extension of the DM pseudoscalar simplified model. A comprehensive study of the phenomenology of the 2HDM+a model is presented, including a discussion of the rich and intricate pattern of mono-X signatures and the relevance of other DM as well as non-DM experiments. Based on our discussions, a set of recommended scans are proposed to explore the parameter space of the 2HDM+a model through LHC searches. The exclusion limits obtained from the proposed scans can be consistently compared to the constraints on the 2HDM+a model that derive from DD, ID and the DM relic density. © 2019 Elsevier B.V.}},
  author       = {{Tomohiro, A. and Doglioni, Caterina and Zhou, C.}},
  issn         = {{2212-6864}},
  language     = {{eng}},
  publisher    = {{Elsevier}},
  series       = {{Physics of the Dark Universe}},
  title        = {{LHC Dark Matter Working Group: Next-generation spin-0 dark matter models}},
  url          = {{http://dx.doi.org/10.1016/j.dark.2019.100351}},
  doi          = {{10.1016/j.dark.2019.100351}},
  volume       = {{27}},
  year         = {{2020}},
}