On neutrino masses and mixings from extra dimensions
Nov 12, 199916 pages
Published in:
- Phys.Lett.B 470 (1999) 149-156
e-Print:
- hep-ph/9907272 [hep-ph]
Report number:
- UR-1576
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Abstract:
In the framework of a Kaluza-Klein type theory with the Standard Model fields localized on a 4-dimensional section while gravity propagates in a full -dimensional space-time, we examine a mechanism of naturally small neutrino mass generation through couplings of Standard Model singlet fermion(s) living also in the full space-time. A numerical studies is carried out on the charged current universality constraint from the ratio of pion decay partial widths. The bounds obtained on the fundamental mass scale could be stringent.Note:
- 16 pages latex, no figure; small modifications in discussions; version to appear in Phys.Lett. B Report-no: UR-1576
- Kaluza-Klein model
- space-time: higher-dimensional
- gravitation
- dimension: 5
- fermion: singlet
- charged current
- universality: violation
- pi: leptonic decay
- pi: width
- numerical calculations
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