Hints for leptonic CP violation or New Physics?

Jan 14, 2016
5 pages
Published in:
  • Phys.Rev.Lett. 117 (2016) 3, 031801
  • Published: Jul 11, 2016
e-Print:

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Abstract: (APS)
One of the major open questions in the neutrino sector is the issue of leptonic CP violation. Current global oscillation data show a mild preference for a large, potentially maximal value for the Dirac CP phase in the neutrino mixing matrix. In this Letter, we point out that new physics in the form of neutral-current-like nonstandard interactions with real couplings would likely yield a similar conclusion even if CP in the neutrino sector were conserved. Therefore, the claim for a discovery of leptonic CP violation will require a robust ability to test new physics scenarios.
Note:
  • 4 pages, 2 figures
  • neutrino: oscillation
  • neutrino: mixing
  • CP: violation
  • phase: CP
  • neutral current
  • neutrino: interaction
  • numerical calculations
  • interpretation of experiments
  • J-PARC Lab
  • NOvA