Challenging Lorentz noninvariant neutrino oscillations without neutrino masses

Details Challenging Lorentz noninvariant neutrino oscillations without neutrino masses Challenging Lorentz noninvariant neutrino oscillations without neutrino masses

2007-06-08

arxiv.org/abs/0706.1085v2

Phys.Lett.B653:267-277,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

19 pages, 6 figures, 1 table. Version to appear in PLB

Scientific paper

10.1016/j.physletb.2007.07.047

We show that the combined data from solar, long-baseline and reactor neutrino experiments can exclude the generalized bicycle model of Lorentz noninvariant direction-dependent and/or direction-independent oscillations of massless neutrinos. This model has five parameters, which is more than is needed in standard oscillation phenomenology with neutrino masses. Solar data alone are sufficient to exclude the pure direction-dependent case. The combination of solar and long-baseline data rules out the pure direction-independent case. With the addition of KamLAND data, a mixture of direction-dependent and direction-independent terms in the effective Hamiltonian is also excluded.

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