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      Hints for leptonic CP violation or New Physics?

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          Abstract

          One of the major open questions in the neutrino sector is the issue of leptonic CP violation. Current global oscillation data shows 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 non-standard 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.

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          Journal
          10.1103/PhysRevLett.117.031801
          1601.03736
          http://arxiv.org/licenses/nonexclusive-distrib/1.0/

          High energy & Particle physics
          High energy & Particle physics

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