A warped scalar portal to fermionic dark matter

Adrian Carmona (CAFPE and Departamento de Física Teórica y del Cosmos, Universidad de Granada, Granada, 18071, Spain) ; Javier Castellano Ruiz (PRISMA+ Cluster of Excellence and Mainz Institute for Theoretical Physics, Johannes Gutenberg University, Mainz, 55099, Germany) ; Matthias Neubert (PRISMA+ Cluster of Excellence and Mainz Institute for Theoretical Physics, Johannes Gutenberg University, Mainz, 55099, Germany; Department of Physics and LEPP, Cornell University, Ithaca, NY, 14853, USA; Department of Physics, Universität Zürich, Winterthurerstrasse 190, Zurich, 8057, Switzerland)

We argue that extensions of the SM with a warped extra dimension, together with a new $${\mathbb {Z}}_2$$ Z 2 -odd scalar singlet, provide a natural explanation not only for the hierarchy problem but also for the nature of fermion bulk masses and the observed dark matter relic abundance. In particular, the Kaluza-Klein excitations of the new scalar particle, which is required to naturally obtain fermion bulk masses through Yukawa-like interactions, can be the leading portal to any fermion propagating into the bulk of the extra dimension and playing the role of dark matter. Moreover, such scalar excitations will necessarily mix with the Higgs boson, leading to modifications of the Higgs couplings and branching ratios, and allowing the Higgs to mediate the coannihilation of the fermionic dark matter. We study these effects and explore the viability of fermionic dark matter in the presence of these new heavy scalar mediators both in the usual freeze-out scenario and in the case where the freeze-out happens during an early period of matter domination.

{
  "_oai": {
    "updated": "2021-03-24T22:07:42Z", 
    "id": "oai:repo.scoap3.org:59475", 
    "sets": [
      "EPJC"
    ]
  }, 
  "authors": [
    {
      "affiliations": [
        {
          "country": "Spain", 
          "value": "CAFPE and Departamento de F\u00edsica Te\u00f3rica y del Cosmos, Universidad de Granada, Granada, 18071, Spain", 
          "organization": "Universidad de Granada"
        }
      ], 
      "surname": "Carmona", 
      "email": "adrian@ugr.es", 
      "full_name": "Carmona, Adrian", 
      "given_names": "Adrian"
    }, 
    {
      "affiliations": [
        {
          "country": "Germany", 
          "value": "PRISMA+ Cluster of Excellence and Mainz Institute for Theoretical Physics, Johannes Gutenberg University, Mainz, 55099, Germany", 
          "organization": "Johannes Gutenberg University"
        }
      ], 
      "surname": "Castellano\u00a0Ruiz", 
      "email": "castella@uni-mainz.de", 
      "full_name": "Castellano\u00a0Ruiz, Javier", 
      "given_names": "Javier"
    }, 
    {
      "affiliations": [
        {
          "country": "Germany", 
          "value": "PRISMA+ Cluster of Excellence and Mainz Institute for Theoretical Physics, Johannes Gutenberg University, Mainz, 55099, Germany", 
          "organization": "Johannes Gutenberg University"
        }, 
        {
          "country": "USA", 
          "value": "Department of Physics and LEPP, Cornell University, Ithaca, NY, 14853, USA", 
          "organization": "Cornell University"
        }, 
        {
          "country": "Switzerland", 
          "value": "Department of Physics, Universit\u00e4t Z\u00fcrich, Winterthurerstrasse 190, Zurich, 8057, Switzerland", 
          "organization": "Universit\u00e4t Z\u00fcrich"
        }
      ], 
      "surname": "Neubert", 
      "email": "matthias.neubert@uni-mainz.de", 
      "full_name": "Neubert, Matthias", 
      "given_names": "Matthias"
    }
  ], 
  "titles": [
    {
      "source": "Springer", 
      "title": "A warped scalar portal to fermionic dark matter"
    }
  ], 
  "dois": [
    {
      "value": "10.1140/epjc/s10052-021-08851-0"
    }
  ], 
  "publication_info": [
    {
      "page_end": "20", 
      "journal_title": "European Physical Journal C", 
      "material": "article", 
      "journal_volume": "81", 
      "artid": "s10052-021-08851-0", 
      "year": 2021, 
      "page_start": "1", 
      "journal_issue": "1"
    }
  ], 
  "$schema": "http://repo.scoap3.org/schemas/hep.json", 
  "acquisition_source": {
    "date": "2021-03-24T22:31:23.215156", 
    "source": "Springer", 
    "method": "Springer", 
    "submission_number": "1674fee68ce811ebbd0e02163e01809a"
  }, 
  "page_nr": [
    20
  ], 
  "license": [
    {
      "url": "https://creativecommons.org/licenses//by/4.0", 
      "license": "CC-BY-4.0"
    }
  ], 
  "copyright": [
    {
      "holder": "The Author(s)", 
      "year": "2021"
    }
  ], 
  "control_number": "59475", 
  "record_creation_date": "2021-01-20T16:30:24.580276", 
  "_files": [
    {
      "checksum": "md5:9f18489daf0d5525170ffa40b718dda4", 
      "filetype": "xml", 
      "bucket": "9c3eecdb-0d9f-48fb-afd7-04d7c54a9392", 
      "version_id": "ec8df0a9-41c7-41cf-ad47-9cecf47887ba", 
      "key": "10.1140/epjc/s10052-021-08851-0.xml", 
      "size": 14666
    }, 
    {
      "checksum": "md5:3ca164fe157d8b13032510f8148aada4", 
      "filetype": "pdf/a", 
      "bucket": "9c3eecdb-0d9f-48fb-afd7-04d7c54a9392", 
      "version_id": "68b08dbd-e994-4987-938e-3c04460a09f0", 
      "key": "10.1140/epjc/s10052-021-08851-0_a.pdf", 
      "size": 1421558
    }
  ], 
  "collections": [
    {
      "primary": "European Physical Journal C"
    }
  ], 
  "arxiv_eprints": [
    {
      "categories": [
        "hep-ph"
      ], 
      "value": "2011.09492"
    }
  ], 
  "abstracts": [
    {
      "source": "Springer", 
      "value": "We argue that extensions of the SM with a warped extra dimension, together with a new  $${\\mathbb {Z}}_2$$  <math> <msub> <mi>Z</mi> <mn>2</mn> </msub> </math>  -odd scalar singlet, provide a natural explanation not only for the hierarchy problem but also for the nature of fermion bulk masses and the observed dark matter relic abundance. In particular, the Kaluza-Klein excitations of the new scalar particle, which is required to naturally obtain fermion bulk masses through Yukawa-like interactions, can be the leading portal to any fermion propagating into the bulk of the extra dimension and playing the role of dark matter. Moreover, such scalar excitations will necessarily mix with the Higgs boson, leading to modifications of the Higgs couplings and branching ratios, and allowing the Higgs to mediate the coannihilation of the fermionic dark matter. We study these effects and explore the viability of fermionic dark matter in the presence of these new heavy scalar mediators both in the usual freeze-out scenario and in the case where the freeze-out happens during an early period of matter domination."
    }
  ], 
  "imprints": [
    {
      "date": "2021-01-20", 
      "publisher": "Springer"
    }
  ]
}
Published on:
20 January 2021
Publisher:
Springer
Published in:
European Physical Journal C , Volume 81 (2021)
Issue 1
Pages 1-20
DOI:
https://doi.org/10.1140/epjc/s10052-021-08851-0
arXiv:
2011.09492
Copyrights:
The Author(s)
Licence:
CC-BY-4.0

Fulltext files: