Neutrino Non-standard Interactions with arbitrary couplings to u and d quarks

Abstract

We introduce a model for Non-Standard neutral current Interaction (NSI) between neutrinos and the matter fields, with an arbitrary coupling to the up and down quarks. The model is based on a new $U(1)$ gauge symmetry with a light gauge boson that mixes with the photon. We show that the couplings to the $u$ and $d$ quarks can have a ratio such that the contribution from NSI to the Coherent Elastic Neutrino-Nucleus Scattering (CE$\nu$NS) amplitude vanishes, relaxing the bound on the NSI from the CE$\nu$NS experiments. Additionally, the deviation of the measured value of the anomalous magnetic dipole moment of the muon from the standard-model prediction can be fitted. The most limiting constraints on our model come from the search for the decay of the new gauge boson to $e^{-}{e}^{+}$ and invisible particles, carried out by NA48/2 and NA64, respectively. We show that these bounds can be relaxed by opening up the decay of the new gauge boson to new light scalars that eventually decay into the $e^{-}{e}^{+}$ pairs. We show that there are ranges that can lead to both a solution to the $(g-2{)}_{\mu }$ anomaly and values of ${\epsilon }_{\mu \mu }={\epsilon }_{\tau \tau }$ large enough to be probed by future solar neutrino experiments.

13+4 pages, 4 figures. V2 matches the published version in PRD

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Cited by in corpus (6)

• Probing for chiral $Z^{\prime }$ gauge boson through scattering measurement experiments
• Searching for Axial Neutral Current Non-Standard Interactions of neutrinos by DUNE-like experiments
• Constraining low scale dark hypercharge symmetry at spallation, reactor and Dark Matter direct detection experiments
• Constraining Non-minimal Dark Sector Scenarios with the COHERENT Neutrino Scattering Data
• Towards First Detection of the Solar MSW Transition With JUNO
• Exploring nonstandard quark interactions through solar neutrino studies