Searching for neutrino polarizability at DUNE

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Abstract
A bstract: We perform an initial study of DUNE’s sensitivity to enhanced neutrino polarizability within models of light scalar mediators. We identify two possible signatures of polarizability due to neutrino scattering on electrons and due to coherent scattering on argon nuclei. These result in either one or two separated electromagnetic showers, respectively, with no associated hadronic activity. For each signature we compute the signal rates and the relevant backgrounds, obtaining the projected reach of the DUNE near detector. We then compare this with the current astrophysical and terrestrial bounds on light scalar models coupling to neutrinos and/or photons.
Funding Information
  • U.S. Department of Energy (DE-SC0007983)
  • U.S. Department of Energy (DE-SC0011784)
  • National Science Foundation (OAC-2103889)
  • National Science Foundation (OAC-2411215)
  • National Science Foundation (OAC-2417682)
  • NextGenerationEU (CUP I13C25000150006)
  • U.S. Department of Energy (DE-SC0024357)
  • United States Department of Energy, Office of Science, Office of High Energy Physics (89243024CSC000002)

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