Constraining nonstandard neutrino-quark interactions with solar, reactor and accelerator data

Escrihuela, F. J.; Miranda, O. G.; Tórtola, M.; Valle, J. W. F.

doi:10.1088/1742-6596/259/1/012091

Cited by 27 publications

(42 citation statements)

References 49 publications

(84 reference statements)

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“…We remind that nonstandard four-fermion interactions with effective couplings ε αβ G F (typically with |ε αβ | 1), may affect the precise determination of the oscillation parameters: in particular, flavordiagonal couplings (α = β) tend to affect the neutrino energy differences and thus the squared mass gaps, while off-diagonal couplings (α = β) may alter the mixing matrix. In the vast related literature, see, e.g., [203,204,205,206,207] for phenomenological reviews and [208,209,210] for theoretical model constructions.…”

Section: Results On Oscillation Parameter Pairsmentioning

confidence: 99%

Current unknowns in the three-neutrino framework

Capozzi

Lisi

Marrone

et al. 2018

Progress in Particle and Nuclear Physics

241

340

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We present an up-to-date global analysis of data coming from neutrino oscillation and nonoscillation experiments, as available in April 2018, within the standard framework including three massive and mixed neutrinos. We discuss in detail the status of the three-neutrino (3ν) mass-mixing parameters, both known and unknown. Concerning the latter, we find that: normal ordering (NO) is favored over inverted ordering (IO) at 3σ level; the Dirac CP phase is constrained within ∼ 15% (∼ 9%) uncertainty in NO (IO) around nearly-maximal CP-violating values; the octant of the largest mixing angle and the absolute neutrino masses remain undetermined. We briefly comment on other unknowns related to theoretical and experimental uncertainties (within 3ν) or possible new states and interactions (beyond 3ν).

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Section: Results On Oscillation Parameter Pairsmentioning

confidence: 99%

Current unknowns in the three-neutrino framework

Capozzi

Lisi

Marrone

et al. 2018

Progress in Particle and Nuclear Physics

241

340

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“…On the other hand, non-standard interaction of neutrinos can crucially affect the interpretation of the experimental data in terms of the relevant neutrino mass parameters. Indeed, as it will be discussed in this work, the presence of NSI in the neutrino propagation may give rise, among other effects, to a degeneracy in the measurement of the solar mixing angle θ 12 [9][10][11]. Likewise, CC NSI at the production and detection of reactor antineutrinos can affect the very precise measurement of the mixing angle θ 13 in Daya Bay [12,13].…”

Section: Introductionmentioning

confidence: 89%

“…the preferred value of ∆m 2 21 by KamLAND and by solar experiments that can be eased by introducing NSI. More surprisingly, these studies revealed an alternative solution to the standard LMA-MSW, known as LMA-Dark or LMA-D solution [9][10][11], requiring NSI with strength dV τ τ − dV ee 1. The presence of this new degenerate solution to the solar neutrino anomaly, shown in Fig.…”

Section: A Nsi In Solar Experimentsmentioning

confidence: 99%

Neutrino Oscillations and Non-standard Interactions

2018

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Current neutrino experiments are measuring the neutrino mixing parameters with an unprecedented accuracy. The upcoming generation of neutrino experiments will be sensitive to subdominant neutrino oscillation effects that can in principle give information on the yet-unknown neutrino parameters: the Dirac CP-violating phase in the PMNS mixing matrix, the neutrino mass ordering and the octant of θ 23 . Determining the exact values of neutrino mass and mixing parameters is crucial to test various neutrino models and flavor symmetries that are designed to predict these neutrino parameters. In the first part of this review, we summarize the current status of the neutrino oscillation parameter determination. We consider the most recent data from all solar neutrino experiments and the atmospheric neutrino data from Super-Kamiokande, IceCube, and ANTARES. We also implement the data from the reactor neutrino experiments KamLAND, Daya Bay, RENO, and Double Chooz as well as the long baseline neutrino data from MINOS, T2K, and NOνA. If in addition to the standard interactions, neutrinos have subdominant yet-unknown Non-Standard Interactions (NSI) with matter fields, extracting the values of these parameters will suffer from new degeneracies and ambiguities. We review such effects and formulate the conditions on the NSI parameters under which the precision measurement of neutrino oscillation parameters can be distorted. Like standard weak interactions, the non-standard interaction can be categorized into two groups: Charged Current (CC) NSI and Neutral Current (NC) NSI. Our focus will be mainly on neutral current NSI because it is possible to build a class of models that give rise to sizeable NC NSI with discernible effects on neutrino oscillation. These models are based on new U(1) gauge symmetry with a gauge boson of mass 10 MeV. The UV complete model should be of course electroweak invariant which in general implies that along with neutrinos, charged fermions also acquire new interactions on which there are strong bounds. We enumerate the bounds that already exist on the electroweak symmetric models and demonstrate that it is possible to build viable models avoiding all these bounds. In the end, we review methods to test these models and suggest approaches to break the degeneracies in deriving neutrino mass parameters caused by NSI.

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“…As discussed in Refs. [22,26,[28][29][30], non-oscillation data (such as those collected by neutrino scattering experiments) is needed to break this degeneracy. However, for light enough mediators (M med O(10) GeV) bounds from deep inelastic neutrino scattering experiments, such as CHARM [31] and NuTeV [32], can be successfully avoided [12,26,29].…”

Section: Introductionmentioning

confidence: 99%

Improved global fit to Non-Standard neutrino Interactions using COHERENT energy and timing data

Coloma

Esteban

Gonzalez-Garcia

et al. 2020

J. High Energ. Phys.

111

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We perform a global fit to neutrino oscillation and coherent neutrino-nucleus scattering data, using both timing and energy information from the COHERENT experiment. The results are used to set model-independent bounds on four-fermion effective operators inducing non-standard neutral-current neutrino interactions. We quantify the allowed ranges for their Wilson coefficients, as well as the status of the LMA-D solution, for a wide class of new physics models with arbitrary ratios between the strength of the operators involving up and down quarks. Our results are presented for the COHERENT experiment alone, as well as in combination with the global data from oscillation experiments. We also quantify the dependence of our results for COHERENT with respect to the choice of quenching factor, nuclear form factor, and the treatment of the backgrounds.

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Constraining nonstandard neutrino-quark interactions with solar, reactor and accelerator data

Cited by 27 publications

References 49 publications

Current unknowns in the three-neutrino framework

Current unknowns in the three-neutrino framework

Neutrino Oscillations and Non-standard Interactions

Improved global fit to Non-Standard neutrino Interactions using COHERENT energy and timing data

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