Abstract
We address some theoretical issues of the quantum decoherence phenomenon within the neutrino oscillation framework and carry out various tests under DUNE simulated experimental environment. On the theoretical side, we provide a general expression for an invariant decoherence matrix under a quantum basis rotation. On the simulated experimental side, considering a rotation invariant and a non-invariant decoherence matrix, we study the impact on the fitting of the standard oscillation parameters, the sensitivity in the mass hierarchy and CP violation, combining the neutrino and antineutrino mode and all available neutrino oscillation probabilities channels. Furthermore, a sensitivity for the decoherence parameter of order $10^{-24}\text{GeV}$ at 3$\sigma$, is obtained for our best case.
Highlights
It is well established that neutrino oscillation is induced by a nonzero neutrino mass [1,2,3,4,5,6,7]
We address some theoretical issues of the quantum decoherence phenomenon within the neutrino oscillation framework and carry out various tests the under DUNE simulated experimental environment
On the simulated experimental side, considering a rotation-invariant and noninvariant decoherence matrix, we study the impact on the fitting of the standard oscillation parameters, the sensitivity in the mass hierarchy, and the CP violation, combining the neutrino and antineutrino mode and all available neutrino oscillation probabilities channels
Summary
It is well established that neutrino oscillation is induced by a nonzero neutrino mass [1,2,3,4,5,6,7]. The typical trait of this subleading effect is to the neutrino (oscillation) connection with physics beyond the Standard Model Within this category, there are several theoretical hypotheses such as: neutrino decay [8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33], nonstandard neutrino interactions [34,35,36,37,38,39,40], Lorentz and CPT invariance violation [41,42,43,44,45,46,47], etc. The study of the degeneracy between Γ and δ, in agreement with our second motivation point
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