How to identify different new neutrino oscillation physics scenarios at DUNE

Denton, Peter B.; Giarnetti, Alessio; Meloni, Davide

doi:10.1007/jhep02(2023)210

Cited by 16 publications

(3 citation statements)

References 194 publications

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“…In that case, a global analysis based on the neutrino oscillation and scattering data will affect the parameter space. Previously such analysis was performed mostly for the heavy mediator case (see for example [113][114][115][116][117][118][119]). A similar global analysis for the light scalar case will be very crucial to get bounds for a realistic light scalar model [108].…”

Section: Jhep03(2023)163mentioning

confidence: 99%

Non-standard neutrino interactions in light mediator models at reactor experiments

Dutta

Ghosh

et al. 2023

J. High Energ. Phys.

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Compared to other neutrino sources, the huge anti-neutrino fluxes at nuclear reactor based experiments empower us to derive stronger bounds on non-standard interactions of neutrinos with electrons mediated by light scalar/vector mediators. At neutrino energy around 200 keV reactor anti-neutrino flux is at least an order of magnitude larger compared to the solar flux. The atomic and crystal form factors of the detector materials related to the details of the atomic structure becomes relevant at this energy scale as the momentum transfers would be small. Non-standard neutrino-electron interaction mediated by light scalar/vector mediator arises naturally in many low-scale models. We also propose one such new model with a light scalar mediator. Here, we investigate the parameter space of such low-scale models in reactor based neutrino experiments with low threshold Ge and Si detectors, and find the prospect of probing/ruling out the relevant parameter space by finding the projected sensitivity at 90% confidence level by performing a χ2-analysis. We find that a detector capable of discriminating between electron recoil and nuclear recoil signal down to a very low threshold such as 5 eV placed in reactor based experiment would be able to probe a larger region in parameter space compared to the previously explored region. A Ge (Si) detector with 10 kg-yr exposure and 1 MW reactor anti-neutrino flux would be able to probe the scalar and vector mediators with masses below 1 keV for coupling products $$ \sqrt{g_{\nu }{g}_e} $$ g ν g e ∼ 1 × 10−6 (9.5 × 10−7) and 1 × 10−7 (8 × 10−8), respectively.

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Section: Jhep03(2023)163mentioning

confidence: 99%

Non-standard neutrino interactions in light mediator models at reactor experiments

Dutta

Ghosh

et al. 2023

J. High Energ. Phys.

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“…This discrepancy could be an interesting hint toward new physics. Recent studies [24][25][26] have demonstrated that the presence of ò eμ and ò eτ , where ò eμ and ò eτ are the dimensionless parameters that quantify the non-standard interactions arising from e − μ and e − τ sector respectively, can help alleviate the tension between NOvA and T2K in the measurement of δ CP .…”

Section: Introductionmentioning

confidence: 99%

Studying lepton flavor violating μ decays with vector leptoquark

Nayak,

Brahma,

Giri

2024

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

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We study the charged LFV $\mu$ decays such as $\mu\rightarrow e\gamma$, $\mu \rightarrow eee$, and $(\mu - e)_{\text{Ti}}$ with a vector leptoquark ($U_3$) by considering the constraints from non-standard neutrino interaction (NSI) sector parameter $\epsilon_{e\mu}$. We consider that these NSIs are attributed to the presence of leptoquarks to account for the difference in the experimental observations of $\delta_{CP}$ measurement by NOvA and T2K ~\cite{nova,t2k}. In our study, we obtained the branching ratios with uncertainties for three decay modes:\begin{eqnarray*}\mathcal{B}(\mu \rightarrow e \gamma) \leq 4.6^{+3.8}_{-2.6} \times 10^{-18},\\ \mathcal{B}(\mu \rightarrow eee) \leq 9.57^{+7.43}_{-5.37} \times 10^{-21},\\\mathcal{B}(\mu \rightarrow e)_{\text{Ti}} \leq 6.89^{+5.61}_{-3.89} \times 10^{-19}.\end{eqnarray*}Our results show an improvement in the current limits, which can be explored in future experiments.

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“…A study on how to identity new neutrino oscillation physics scenarios at DUNE experiment is presented in ref [35]…”

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confidence: 99%

Analytic neutrino oscillation probabilities

Fong

2023

SciPost Phys.

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In the work, we derive exact analytic expressions for (3+N)(3+N)-flavor neutrino oscillation probabilities in an arbitrary matter potential in term of matrix elements and eigenvalues of the Hamiltonian. With the analytic expressions, we demonstrate that nonunitary and nonstandard neutrino interaction scenarios are physically distinct: they satisfy different identities and can in principle be distinguished experimentally. The analytic expressions are implemented in a public code NuProbe, a tool for probing new physics through neutrino oscillations.

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How to identify different new neutrino oscillation physics scenarios at DUNE

Cited by 16 publications

References 194 publications

Non-standard neutrino interactions in light mediator models at reactor experiments

Non-standard neutrino interactions in light mediator models at reactor experiments

Studying lepton flavor violating μ decays with vector leptoquark

Analytic neutrino oscillation probabilities

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