Solar neutrino oscillation from large extra dimensions

Details Solar neutrino oscillation from large extra dimensions Solar neutrino oscillation from large extra dimensions

2000-08-05

arxiv.org/abs/hep-ph/0008049v2

Phys.Lett. B495 (2000) 136-146

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages, 2 figures

Scientific paper

10.1016/S0370-2693(00)01206-5

A plausible explanation for the existence of additional light sterile neutrinos is that they correspond to modulini, fermionic partners of moduli, which propagate in new large dimensions. We discuss the phenomenological implications of such states and show that solar neutrino oscillation is well described by small angle MSW oscillation to the tower of Kaluza Klein states associated with the modulini. In the optimal case the recoil electron energy spectrum agrees precisely with the measured one, in contrast to the single sterile neutrino case which is disfavoured. We also consider how all oscillation phenomena can be explained in a model including bulk neutrino states. In particular, we show that a naturally maximal mixing for atmospheric neutrinos can be easily obtained.

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