Higher dimensional models of light Majorana neutrinos confronted by data

Details Higher dimensional models of light Majorana neutrinos confronted by data Higher dimensional models of light Majorana neutrinos confronted by data

2004-04-21

arxiv.org/abs/hep-ph/0404174v2

Phys.Rev. D70 (2004) 051903

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, Revtex4, 2 PS figures. Fig. 2a and 2b from earlier version are now combined into one figure. Minor modifications in t

Scientific paper

10.1103/PhysRevD.70.051903

We discuss experimental and observational constraints on certain models of higher dimensional light Majorana neutrinos. Models with flavor blind brane-bulk couplings plus three or four flavor diagonal light Majorana neutrinos on the brane, with subsequent mixing induced solely by the Kaluza-Klein tower of states, are found to be excluded by data on the oscillations of solar, atmospheric and reactor neutrinos, taken together with the WMAP upper bound on the sum of neutrino masses. Extra dimensions, if relevant to neutrino mixing, need to discriminate between neutrino flavors.

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