Quantum decoherence effects on precision measurements at DUNE and T2HK

Barenboim, G.; Calatayud-Cadenillas, A.M.; Gago, A.M.; Ternes, C.A.

doi:10.1016/j.physletb.2024.138626

Physics Letters B

2024

DOI: 10.1016/j.physletb.2024.138626

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Quantum decoherence effects on precision measurements at DUNE and T2HK

G. Barenboim,

A.M. Calatayud-Cadenillas,

A.M. Gago

et al.

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2024

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Cited by 3 publications

(2 citation statements)

References 41 publications

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“…The NOvA experiment exhibits an energy resolution between 9%-14% for electron neutrinos within the 0-5 GeV range, potentially influencing the detail with which neutrino oscillations are observed [31]. For the T2HK experiment, the energy resolution can be approximately represented as E E 0.031 0.0822 + [32]. The KamLAND experiment offers better resolution at lower energies, described as approximately E 6.4% MeV ( ), enabling more precise lower-energy measurements [33].…”

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confidence: 99%

“…This can affect the neutrino oscillation experiments as well. Such effects of finite wavepacket size and decoherence have been studied for both reactor and accelerator experimental setups such as JUNO [34], KamLAND [35], T2K [36], DUNE and T2HK [32]. The combination of the effect of decoherence with neutrino decay and NSI is expected to have some effects on the oscillation probabilities.…”

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confidence: 99%

See 1 more Smart Citation

Majorana CP-violating phases and NSI effects in neutrino decay

Alok,

Chundawat,

Mandal

et al. 2024

J. Phys. G: Nucl. Part. Phys.

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In this work, we investigate the impact of neutrino decay in the presence of Non-Standard Interactions (NSI) along with the effects of the Majorana phase on neutrino decay in matter in the context of two-flavor neutrino oscillations. These effects are studied on neutrino oscillation probabilities $P_{\alpha \beta} \equiv P(\nu_{\alpha} \to \nu_{\beta})$, and the difference $\Delta P_{\alpha \beta} \equiv P(\nu_{\alpha} \to \nu_{\beta}) - P(\bar {\nu}_{\alpha} \to \bar{\nu}_{\beta})$ for several accelerator and reactor neutrino experiments. We find that for $P_{\alpha \beta}$, the influence of the Majorana phase on decay in matter can be replicated by the simultaneous presence of both decay and NSI.However, precise measurements of the $P_{\alpha \beta}$ and $\Delta P_{\alpha\beta}$ observables have the potential to unequivocally identify the presence of the Majorana phase by discerning its effects from the concurrent presence of both decay and NSI.

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confidence: 99%

mentioning

confidence: 99%

Majorana CP-violating phases and NSI effects in neutrino decay

Alok,

Chundawat,

Mandal

et al. 2024

J. Phys. G: Nucl. Part. Phys.

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Decoherence in neutrino oscillation at the ESSnuSB experiment

Aguilar,

Anastasopoulos,

Baussan

et al. 2024

J. High Energ. Phys.

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Neutrino oscillation experiments provide a unique window in exploring several new physics scenarios beyond the standard three flavour. One such scenario is quantum decoherence in neutrino oscillation which tends to destroy the interference pattern of neutrinos reaching the far detector from the source. In this work, we study the decoherence in neutrino oscillation in the context of the ESSnuSB experiment. We consider the energy-independent decoherence parameter and derive the analytical expressions for Pμe and Pμμ probabilities in vacuum. We have computed the capability of ESSnuSB to put bounds on the decoherence parameters namely, Γ21 and Γ32 and found that the constraints on Γ21 are competitive compared to the DUNE bounds and better than the most stringent LBL ones from MINOS/MINOS+. We have also investigated the impact of decoherence on the ESSnuSB measurement of the Dirac CP phase δCP and concluded that it remains robust in the presence of new physics.

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Understanding gravitationally induced decoherence parameters in neutrino oscillations using a microscopic quantum mechanical model

Domi,

Eberl,

Fahn

et al. 2024

J. Cosmol. Astropart. Phys.

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In this work, a microscopic quantum mechanical model for gravitationally induced decoherence introduced by Blencowe and Xu is investigated in the context of neutrino oscillations. The focus is on the comparison with existing phenomenological models and the physical interpretation of the decoherence parameters in such models. The results show that for neutrino oscillations in vacuum gravitationally induced decoherence can be matched with phenomenological models with decoherence parameters of the form Γ ij ∼ Δ m 4 ij E -2. When matter effects are included, the decoherence parameters exhibit a dependence on the varying matter density across the Earth layers. This behavior can be explained by the nature of the coupling between neutrinos and the gravitational wave environment, as suggested by linearised gravity. On a theoretical level, these different models can be characterised by a different choice of Lindblad operators, with the model with decoherence parameters that do not include matter effects being less suitable from the point of view of linearised gravity. Consequently, in the case of neutrino oscillations in matter, the microscopic model does not agree with many existing phenomenological models that assume constant decoherence parameters in matter. Nonetheless, we identify the KamLAND experimental setup as particularly well-suited to establish the first experimental constraints on the model parameters, namely the neutrino coupling to the gravitational wave environment and its temperature, based on a prior analysis using the phenomenological model.

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Quantum decoherence effects on precision measurements at DUNE and T2HK

Cited by 3 publications

References 41 publications

Majorana CP-violating phases and NSI effects in neutrino decay

Majorana CP-violating phases and NSI effects in neutrino decay

Decoherence in neutrino oscillation at the ESSnuSB experiment

Understanding gravitationally induced decoherence parameters in neutrino oscillations using a microscopic quantum mechanical model

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