Abstract
In this work we analyze quantum decoherence in neutrino oscillations considering the Open Quantum System framework and oscillations through matter for three neutrino families. Taking DUNE as a case study we performed sensitivity analyses for two neutrino flux configurations finding limits for the decoherence parameters. We also offer a physical interpretation for a new peak which arises at the $\nu_{e}$ appearance probability with decoherence. The best sensitivity regions found for the decoherence parameters are $\Gamma_{21}\le 1.2\times10^{-23}\,\text{GeV}$ and $\Gamma_{32}\le 7.7\times10^{-25}\,\text{GeV}$ at $90\%$ C. L.
Highlights
Even though the standard three-neutrino oscillation paradigm is well established and several oscillation parameters have been already measured with certain precision [1], the quest for establishing the violation of the charge parity (CP) symmetry in the leptonic sector, the octant preference or the maximality of the atmospheric mixing angle, and the neutrino mass ordering is still ongoing
We offer a physical interpretation for a new peak which arises at the νe appearance probability with decoherence
III, we showed how the new peak at the νe appearance probability can be seen as an elimination of a destructive interference, generating an increase in the transition to νe
Summary
Even though the standard three-neutrino oscillation paradigm is well established and several oscillation parameters have been already measured with certain precision [1], the quest for establishing the violation of the charge parity (CP) symmetry in the leptonic sector, the octant preference or the maximality of the atmospheric mixing angle, and the neutrino mass ordering is still ongoing. In order to fulfill such goals and to reach a greater precision in the measurement of all the neutrino oscillation parameters, future experiments such as the Deep Underground Neutrino Experiment (DUNE) [2,3,4,5,6] are being developed. DUNE is sensitive to the Dirac phase present in the lepton mixing matrix, which parameterizes the possibility that neutrinos violate the CP symmetry
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