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Paper   IPM / Physic / 17042
School of Physics
  Title:   Neutrino Non-standard Interactions with arbitrary couplings to u and d quarks
1.  N. Bernal
2.  Y. Farzan
  Status:   Published
  Journal: Phys. Rev. D
  No.:  3
  Vol.:  107
  Year:  2023
  Pages:   035007
  Supported by:  IPM
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. We discuss the relevant experimental and observational bounds on the parameter space and 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.

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