eV Scale Sterile Neutrino and Dark Matter Phenomenology in $$A_4 \times U(1)_\mathrm{B-L}$$ Model

The observed anomalies by several short-baseline neutrino oscillation experiments suggest the possible existence of an eV-scale sterile neutrino. Considering a modified discrete A 4 flavour symmetric model in the framework of two eV-scale sterile neutrinos, we can explain the current neutrino oscillation parameters along with the neutrinoless double beta decay (NDBD) bound on effective neutrino mass. This model also accommodates a non-zero reactor mixing angle compatible with the current observation.

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“…This model also contributes to NDBD within the experimental domain. The detailed study is done in [4].…”

Section: Discussionmentioning

confidence: 99%

eV Scale Sterile Neutrinos in $$A_4$$ Symmetric Model

Behera

Mohanta

2021

Springer Proceedings in Physics

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“…[33], by including one eV-scale sterile neutrino in an A 4 flavour extended B − L model, which can successfully accommodate all the current oscillation data. In this framework the 4 × 4 mass matrix can be analytically diagonalized with eigenvalues [33]:…”

Section: Which Gives Rise the Lagrangian For Neutrinomentioning

confidence: 99%

“…It should be emphasized that, since the model considered here has similar structure of the mass matrix as that of Ref. [33], it can also explain the current oscillation data for suitable values of model parameters, and hence the detailed analysis will not be presented in this work. Rather we will focus on the implications of eV-sterile neutrino on the determination of oscillation parameters at the currently running long-baseline experiments.…”

Section: Which Gives Rise the Lagrangian For Neutrinomentioning

confidence: 99%

Impact of Active-Sterile Neutrino Mixing at Currently Running Long-Baseline Experiments

Majhi

Soumya

Mohanta

2019

Springer Proceedings in Physics

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Recent ν e appearance data from the Mini Booster Neutrino Experiment (MiniBooNE) are in support of the excess of events reported by the Liquid Scintillator Neutrino Detector (LSND), which provides an indirect hint for the existence of eV-scale sterile neutrino. As these sterile neutrinos can mix with the standard active neutrinos, in this paper, we explore the effect of such active-sterile mixing on the determination of various oscillation parameters by the currently running long-baseline neutrino experiments. We find that the existence of sterile neutrino can lead to new kind of degeneracies among these parameters which would deteriorate the mass hierarchy sensitivity of NOνA experiment. We also find that addition of data from T2K experiment helps in resolution of degeneracies.

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eV Scale Sterile Neutrino and Dark Matter Phenomenology in $$A_4 \times U(1)_\mathrm{B-L}$$ Model

Cited by 2 publications

References 5 publications

eV Scale Sterile Neutrinos in $$A_4$$ Symmetric Model

eV Scale Sterile Neutrinos in $$A_4$$ Symmetric Model

Impact of Active-Sterile Neutrino Mixing at Currently Running Long-Baseline Experiments

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