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A global analysis strategy to resolve neutrino NSI degeneracies with scattering and oscillation data
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Neutrino non-standard interactions (NSI) with the first generation of standard model fermions can span a parameter space of large dimension and exhibit degeneracies that cannot be broken by a single class of experiment. Oscillation experiments, together with neutrino scattering experiments, can merge their observations into a highly informational dataset to combat this problem. We consider combining neutrino-electron and neutrino-nucleus scattering data from the Borexino and COHERENT experiments, including a projection for the upcoming coherent neutrino scattering measurement at the CENNS-10 liquid argon detector. We extend the reach of these data sets over the NSI parameter space with projections for neutrino scattering at a future multi-ton scale dark matter detector and future oscillation measurements from atmospheric neutrinos at the Deep Underground Neutrino Experiment (DUNE). In order to perform this global analysis, we adopt a novel approach using the copula method, utilized to combine posterior information from different experiments with a large, generalized set of NSI parameters. We find that the contributions from DUNE and a dark matter detector to the Borexino and COHERENT fits can improve constraints on the electron and quark NSI parameters by up to a factor of 2 to 3, even when relatively many NSI parameters are left free to vary in the analysis.
Forward citations
Cited by 5 Pith papers
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Neutrino electromagnetic properties and sterile dipole portal in light of the first solar CE$\nu$NS data
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Bounds on new neutrino interactions from the first CE$\nu$NS data at direct detection experiments
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$\texttt{SNuDD}$: Solar Neutrinos for Direct Detection
SNuDD computes solar-neutrino recoil spectra with non-standard interactions and derives NSI limits from xenon direct-detection data that are competitive with dedicated neutrino experiments.
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Testing light and heavy vector mediators with solar CE$\nu$NS measurements
Combined solar CEνNS data from XENONnT, PandaX-4T, and LZ yield competitive constraints on vector NSI and light mediators and a weak mixing angle measurement at low momentum transfer.
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Neutrino NSI in archaeological Pb
RES-NOVA with a 0.1 keV threshold and 1 ton·yr exposure could probe neutrino non-standard interactions beyond current global constraints, especially in the eτ sector.
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