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Paper   IPM / Physic / 15183
School of Physics
  Title:   A Plan to Rule out Large Non-Standard Neutrino Interactions After COHERENT Data
1.  P.B. Denton
2.  Y. Farzan
3.  I.M. Shoemaker
  Status:   Preprint
  Year:  2018
  Supported by:  IPM
In the presence of neutrino Non-Standard Interactions (NSI) with matter, the derivation of neutrino parameters from oscillation data must be reconsidered. In particular, along with the standard solution to neutrino oscillation, another solution known as "LMA-Dark" is compatible with global oscillation data and requires both θ12 > π/4 and a certain flavor pattern of NSI with an effective coupling comparable to GF. Contrary to conventional expectations, there is a class of models based on a new U(1)X gauge symmetry with a gauge boson of mass of few MeV to few 10 MeV that can viably give rise to such large NSI. These models can in principle be tested by Coherent Elastic ν-Nucleus Scattering (CEνNS) experiments such as COHERENT and the upcoming reactor neutrino experiment, CONUS. We analyze how the recent results from the COHERENT experiment constrain these models and forecast the discovery potential with future COHERENT and CONUS. We also derive the constraints from COHERENT on lepton flavor violating NSI.

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