Challenging Lorentz noninvariant neutrino oscillations without neutrino masses
arXiv:0706.1085 · doi:10.1016/j.physletb.2007.07.047
Abstract
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.
arXiv comment19 pages, 6 figures, 1 table. Version to appear in PLB
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