Search for CP -Violating Neutrino Nonstandard Interactions with the NOvA Experiment


Acero M., Acharya B., Adamson P., Aliaga L., Anfimov N., Antoshkin A., ...More

Physical Review Letters, vol.133, no.20, 2024 (SCI-Expanded, Scopus)

  • Publication Type: Article / Article
  • Volume: 133 Issue: 20
  • Publication Date: 2024
  • Doi Number: 10.1103/physrevlett.133.201802
  • Journal Name: Physical Review Letters
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Chemical Abstracts Core, Compendex, INSPEC, zbMATH, DIALNET, Nature Index
  • Erciyes University Affiliated: Yes

Abstract

This Letter reports a search for charge-parity (CP) symmetry violating nonstandard interactions (NSI) of neutrinos with matter using the NOvA Experiment, and examines their effects on the determination of the standard oscillation parameters. Data from νμ(ν¯μ)→νμ(ν¯μ) and νμ(ν¯μ)→νe(ν¯e) oscillation channels are used to measure the effect of the NSI parameters Iµeμ and Iµeτ. With 90% CL the magnitudes of the NSI couplings are constrained to be |Iµeμ| 0.3 and |Iµeτ| 0.4. A degeneracy at |Iµeτ|≈1.8 is reported, and we observe that the presence of NSI limits sensitivity to the standard CP phase δCP.