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Paper   IPM / P / 17042
School of Physics
  Title:   Neutrino Non-standard Interactions with arbitrary couplings to u and d quarks
  Author(s): 
1.  N. Bernal
2.  Y. Farzan
  Status:   Published
  Journal: Phys. Rev. D
  No.:  3
  Vol.:  107
  Year:  2023
  Pages:   035007
  Supported by:  IPM
  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 (CEνNS) amplitude vanishes, relaxing the bound on the NSI from the CEνNS 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 (g2)μ anomaly and values of ϵμμ=ϵττ large enough to be probed by future solar neutrino experiments.

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