View in EDS

Geometric origin of large lepton mixing in a higher-dimensional spacetime

Saved in:
Bibliographic Details
Title: Geometric origin of large lepton mixing in a higher-dimensional spacetime
Authors: Watari, T.1,2 watari@hep-th.phys.s.u-tokyo.ac.jp, Yanagida, T.1,2
Source: Physics Letters B. Sep2002, Vol. 544 Issue 1/2, p167. 9p.
Subjects: Leptons (Nuclear physics), Nuclear physics
Abstract: The large mixing in the lepton sector observed in the recent neutrino-oscillation experiments strongly suggests that nature of left-handed lepton doublets is very different from that of left-handed quark doublets. This means that there is a big disparity between the matter multiplets 5*''s and 10''s in the SU(5) unified theory. We show that this big difference can be explained in a six-dimensional spacetime compactified on the T2/Z3 orbifold. That is, we propose to put three families of 5*''s on three equivalent fixed points of the orbifold and the three 10''s in the two-dimensional bulk. We construct an explicit model realizing this situation and show that the democratic mass structure in the lepton sector is naturally obtained and hence the model explains the observed bi-large lepton mixing and simultaneously the required small mixing Ue3. The mass matrices and mixing in the quark sector are also briefly discussed. [Copyright &y& Elsevier]
Copyright of Physics Letters B is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
FullText Text:
  Availability: 0
Header DbId: egs
DbLabel: Engineering Source
An: 7873937
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: Geometric origin of large lepton mixing in a higher-dimensional spacetime
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Watari%2C+T%2E%22">Watari, T.</searchLink><relatesTo>1,2</relatesTo><i> watari@hep-th.phys.s.u-tokyo.ac.jp</i><br /><searchLink fieldCode="AR" term="%22Yanagida%2C+T%2E%22">Yanagida, T.</searchLink><relatesTo>1,2</relatesTo>
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Physics+Letters+B%22">Physics Letters B</searchLink>. Sep2002, Vol. 544 Issue 1/2, p167. 9p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Leptons+%28Nuclear+physics%29%22">Leptons (Nuclear physics)</searchLink><br /><searchLink fieldCode="DE" term="%22Nuclear+physics%22">Nuclear physics</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The large mixing in the lepton sector observed in the recent neutrino-oscillation experiments strongly suggests that nature of left-handed lepton doublets is very different from that of left-handed quark doublets. This means that there is a big disparity between the matter multiplets <f>5*</f>''s and <f>10</f>''s in the <f>SU(5)</f> unified theory. We show that this big difference can be explained in a six-dimensional spacetime compactified on the <f>T2/Z3</f> orbifold. That is, we propose to put three families of <f>5*</f>''s on three equivalent fixed points of the orbifold and the three <f>10</f>''s in the two-dimensional bulk. We construct an explicit model realizing this situation and show that the democratic mass structure in the lepton sector is naturally obtained and hence the model explains the observed bi-large lepton mixing and simultaneously the required small mixing <f>Ue3</f>. The mass matrices and mixing in the quark sector are also briefly discussed. [Copyright &y& Elsevier]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Physics Letters B is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=7873937
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1016/S0370-2693(02)02503-0
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 9
        StartPage: 167
    Subjects:
      – SubjectFull: Leptons (Nuclear physics)
        Type: general
      – SubjectFull: Nuclear physics
        Type: general
    Titles:
      – TitleFull: Geometric origin of large lepton mixing in a higher-dimensional spacetime
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Watari, T.
      – PersonEntity:
          Name:
            NameFull: Yanagida, T.
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 19
              M: 09
              Text: Sep2002
              Type: published
              Y: 2002
          Identifiers:
            – Type: issn-print
              Value: 03702693
          Numbering:
            – Type: volume
              Value: 544
            – Type: issue
              Value: 1/2
          Titles:
            – TitleFull: Physics Letters B
              Type: main
ResultId 1