The formal seesaw mechanism of Majorana neutrinos with unbroken gauge symmetry

Zhi-zhong Xing (Institute of High Energy Physics, School of Physical Sciences, University of Chinese Academy of Sciences, Beijing, China; Center of High Energy Physics, Peking University, Beijing, China)

We reformulate the canonical seesaw mechanism in the case that the electroweak gauge symmetry is unbroken, and show that it can formally work and allow us to derive an exact seesaw formula for the light and heavy Majorana neutrinos. We elucidate the reason why there is a mismatch between the mass eigenstates of heavy Majorana neutrinos associated with thermal leptogenesis and those associated with the seesaw framework, and establish the exact and explicit relations between the original and derivational seesaw parameters by using an Euler-like parametrization of the 6×6 active-sterile flavor mixing matrix.

{
  "license": [
    {
      "url": "http://creativecommons.org/licenses/by/3.0/", 
      "license": "CC-BY-3.0"
    }
  ], 
  "copyright": [
    {
      "holder": "The Author(s)", 
      "statement": "The Author(s)", 
      "year": "2023"
    }
  ], 
  "control_number": "75552", 
  "_oai": {
    "updated": "2024-01-24T09:30:45Z", 
    "id": "oai:repo.scoap3.org:75552", 
    "sets": [
      "NPB"
    ]
  }, 
  "authors": [
    {
      "affiliations": [
        {
          "country": "China", 
          "value": "Institute of High Energy Physics, School of Physical Sciences, University of Chinese Academy of Sciences, Beijing, China"
        }, 
        {
          "country": "China", 
          "value": "Center of High Energy Physics, Peking University, Beijing, China"
        }
      ], 
      "surname": "Xing", 
      "email": "xingzz@ihep.ac.cn", 
      "full_name": "Xing, Zhi-zhong", 
      "given_names": "Zhi-zhong"
    }
  ], 
  "_files": [
    {
      "checksum": "md5:ccba467c0827efd2cb6e7d0a3270d334", 
      "filetype": "xml", 
      "bucket": "0cb34e6e-9ea1-4d3b-8a81-e410deae95da", 
      "version_id": "6f53b126-0643-4e60-8fb7-6711ab203b37", 
      "key": "10.1016/j.nuclphysb.2023.116106.xml", 
      "size": 410373
    }, 
    {
      "checksum": "md5:7ad3f815b0b7cc2c30e520bd898abf5b", 
      "filetype": "pdf", 
      "bucket": "0cb34e6e-9ea1-4d3b-8a81-e410deae95da", 
      "version_id": "7a0cabd5-a1fe-4b1f-9aad-a0380f5fb402", 
      "key": "10.1016/j.nuclphysb.2023.116106.pdf", 
      "size": 335325
    }, 
    {
      "checksum": "md5:abd763fb424316838d1235f011043591", 
      "filetype": "pdf/a", 
      "bucket": "0cb34e6e-9ea1-4d3b-8a81-e410deae95da", 
      "version_id": "048432c5-19fd-4f3b-b6da-e724c3351c30", 
      "key": "10.1016/j.nuclphysb.2023.116106_a.pdf", 
      "size": 339788
    }
  ], 
  "record_creation_date": "2023-02-06T15:30:32.439665", 
  "titles": [
    {
      "source": "Elsevier", 
      "title": "The formal seesaw mechanism of Majorana neutrinos with unbroken gauge symmetry"
    }
  ], 
  "collections": [
    {
      "primary": "Nuclear Physics B"
    }
  ], 
  "dois": [
    {
      "value": "10.1016/j.nuclphysb.2023.116106"
    }
  ], 
  "publication_info": [
    {
      "journal_volume": "987 C", 
      "journal_title": "Nuclear Physics B", 
      "material": "article", 
      "artid": "116106", 
      "year": 2024
    }
  ], 
  "$schema": "http://repo.scoap3.org/schemas/hep.json", 
  "abstracts": [
    {
      "source": "Elsevier", 
      "value": "We reformulate the canonical seesaw mechanism in the case that the electroweak gauge symmetry is unbroken, and show that it can formally work and allow us to derive an exact seesaw formula for the light and heavy Majorana neutrinos. We elucidate the reason why there is a mismatch between the mass eigenstates of heavy Majorana neutrinos associated with thermal leptogenesis and those associated with the seesaw framework, and establish the exact and explicit relations between the original and derivational seesaw parameters by using an Euler-like parametrization of the <math><mn>6</mn><mo>\u00d7</mo><mn>6</mn></math> active-sterile flavor mixing matrix."
    }
  ], 
  "imprints": [
    {
      "date": "2024-01-24", 
      "publisher": "Elsevier"
    }
  ], 
  "acquisition_source": {
    "date": "2024-01-24T09:30:42.639371", 
    "source": "Elsevier", 
    "method": "Elsevier", 
    "submission_number": "2525fd58ba9b11eea49c8e4864f4776e"
  }
}
Published on:
24 January 2024
Publisher:
Elsevier
Published in:
Nuclear Physics B , Volume 987 C (2024)

Article ID: 116106
DOI:
https://doi.org/10.1016/j.nuclphysb.2023.116106
Copyrights:
The Author(s)
Licence:
CC-BY-3.0

Fulltext files: