Revealing neutrino nature and $CPT$ violation with decoherence effects

Abstract

We study decoherence effects on mixing among three generations of neutrinos. We show that in presence of a non--diagonal dissipation matrix, both Dirac and Majorana neutrinos can violate the $CPT$ symmetry and the oscillation formulae depend on the parametrization of the mixing matrix. We reveal the $CP$ violation in the transitions preserving the flavor, for a certain form of the dissipator. In particular, the $CP$ violation affects all the transitions in the case of Majorana neutrinos, unlike Dirac neutrinos which still preserve the $CP$ symmetry in one of the transitions flavor preserving. This theoretical result shows that decoherence effects, if exist for neutrinos, could allow to determine the neutrino nature and to test fundamental symmetries of physics. Next long baseline experiments could allow such an analysis. We relate our study with experiments by using the characteristic parameters and the constraints on the elements of the dissipation matrix of current experiments.

arXiv comment13 pages, 2 figures

References in corpus (44)

• Data Tables for Lorentz and CPT Violation
• Gravity, Lorentz Violation, and the Standard Model
• Quantum Spacetime Phenomenology
• Probing possible decoherence effects in atmospheric neutrino oscillations
• Neutrino oscillations in curved spacetime: an heuristic treatment
• Open system approach to neutrino oscillations
• Quantum Field Theory of three flavor neutrino mixing and oscillations with CP violation
• Quantum Field Theory of boson mixing
• Massless neutrino oscillations
• Probing non-standard decoherence effects with solar and KamLAND neutrinos
• Neutrino mixing contribution to the cosmological constant
• Neutrino optics and oscillations in gravitational fields
• Note on the field theory of neutrino mixing
• Neutrino mixing as a source of dark energy
• The General Theory of Quantum Field Mixing
• Remarks on flavor-neutrino propagators and oscillation formulae
• Reconciling results of LSND, MiniBooNE and other experiments with soft decoherence
• Dark energy and particle mixing
• Lepton charge and neutrino mixing in pion decay processes
• Quantum Dissipative Effects and Neutrinos : current constraints and future perspectives
• Neutrino oscillations in extended theories of gravity
• Neutrinos in curved spacetimes: particle mixing and flavor oscillations
• Decoherence in neutrino oscillations, neutrino nature and CPT violation
• Probing quantum decoherence in atmospheric neutrino oscillations with a neutrino telescope
• Decoherence in neutrino propagation through matter, and bounds from IceCube/DeepCore
• Neutrino Oscillations in Brans-Dicke Theory of Gravity
• Phenomenology of flavor oscillations with non-perturbative effects from quantum field theory
• Dark energy, cosmological constant and neutrino mixing
• Quantum Decoherence Effects in Neutrino Oscillations at DUNE
• Fermion mixing in quasi-free states
• No Effect of Majorana Phases in Neutrino Oscillations
• Revisiting quantum decoherence for neutrino oscillations in constant matter density
• Axion-photon mixing in quantum field theory and vacuum energy
• Extraction of Meson Resonances from Three-pions Photo-production Reactions
• Dissipative Effect in Long Baseline Neutrino Experiments
• Neutrino mixing, flavor states and dark energy
• Revisiting the quantum decoherence scenario as an explanation for the LSND anomaly
• Quantum vacuum, dark matter, dark energy and spontaneous supersymmetry breaking
• Mixing-induced Spontaneous Supersymmetry Breaking
• Particle mixing, flavor condensate and dark energy
• Gravity, entanglement and CPT-symmetry violation in particle mixing
• The Leggett--Garg K3 quantity discriminates Dirac and Majorana neutrinos
• Time-to-space conversion in quantum field theory of flavor mixing
• The signal of ill-defined CPT weakening entanglement in the $B_d$ system

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• Muon $g-2$ anomaly and non-locality
• Boson mixing and flavor oscillations in curved space-time
• Understanding gravitationally induced decoherence parameters in neutrino oscillations using a microscopic quantum mechanical model
• Decoherence in Neutrino Oscillation at the ESSnuSB Experiment
• Study of quantum decoherence at Protvino to ORCA experiment
• On the Geometric Phase and Majorana Neutrinos
• Testing CPT violation, entanglement and gravitational interactions in particle mixing with trapped ions
• Observability of spontaneous collapse in flavor oscillations and its relation to the CP and CPT symmetries
• Quantum coherence in neutrino spin-flavor oscillations
• Probing quantum decoherence at Belle II and LHCb
• Exploring the nature of neutrinos in a dissipative environment
• Neutrino decoherence and violation of the strong equivalence principle
• Neutrino Decoherence via Modified Dispersion
• Majorana CP Violation Insights from Decaying Neutrinos