Change search
ReferencesLink to record
Permanent link

Direct link
Soft L-e - L-mu - L-tau flavour symmetry breaking and sterile neutrino keV Dark Matter
KTH, School of Engineering Sciences (SCI), Theoretical Physics, Theoretical Particle Physics.
2011 (English)In: Journal of Cosmology and Astroparticle Physics, ISSN 1475-7516, Vol. 2011, no 01, 034- p.Article in journal (Refereed) Published
Abstract [en]

We discuss how a L-e - L-mu - L-tau flavour symmetry that is softly broken leads to keV sterile neutrinos, which are a prime candidate for Warm Dark Matter. This is to our knowledge the first model where flavour symmetries are applied simultaneously to active and sterile neutrinos explaining at the same time active neutrino properties and this peculiar Dark Matter scenario. The essential point is that different scales of the symmetry breaking and the symmetry preserving entries in the mass matrix lead to one right- handed neutrino which is nearly massless compared to the other two. Furthermore, we naturally predict vanishing theta(13) and maximal theta(23), while the correct value of theta(12) must come from the mixing of the charged leptons. We can furthermore predict an exact mass spectrum for the light neutrinos, which will be testable in the very near future.

Place, publisher, year, edition, pages
IOP Publishing , 2011. Vol. 2011, no 01, 034- p.
Keyword [en]
dark matter theory, neutrino properties, neutrino theory, cosmological neutrinos
National Category
Astronomy, Astrophysics and Cosmology
URN: urn:nbn:se:kth:diva-31005DOI: 10.1088/1475-7516/2011/01/034ISI: 000286802900034OAI: diva2:402876
QC 20110310Available from: 2011-06-22 Created: 2011-03-07 Last updated: 2011-06-22Bibliographically approved

Open Access in DiVA

fulltext(197 kB)93 downloads
File information
File name FULLTEXT01.pdfFile size 197 kBChecksum SHA-512
Type fulltextMimetype application/pdf

Other links

Publisher's full textJournal of Cosmology and Astroparticle PhysicsArXiv

Search in DiVA

By author/editor
Merle, Alexander
By organisation
Theoretical Particle Physics
In the same journal
Journal of Cosmology and Astroparticle Physics
Astronomy, Astrophysics and Cosmology

Search outside of DiVA

GoogleGoogle Scholar
Total: 93 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 49 hits
ReferencesLink to record
Permanent link

Direct link