A new mechanism for a naturally small Dirac neutrino mass

Details A new mechanism for a naturally small Dirac neutrino mass A new mechanism for a naturally small Dirac neutrino mass

2002-10-08

arxiv.org/abs/hep-ph/0210131v1

Phys.Rev. D67 (2003) 095011

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages (2 with figures), twocolumn format

Scientific paper

10.1103/PhysRevD.67.095011

A mechanism is proposed in which a right-handed neutrino zero mode and a right-handed charged lepton zero mode can be localized at the same place along an extra compact dimension while having markedly different spreads in their wave functions: a relatively narrow one for the neutrino and a rather broad one for the charged lepton. In their overlaps with the wave function for the left-handed zero modes, this mechanism could produce a natural large hierarchy in the effective Yukawa couplings in four dimensions, and hence a large disparity in masses.

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