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arXiv · 1601.03736

Hints for leptonic CP violation or New Physics?

David V. Forero·Patrick Huber
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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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David V. Forero, Patrick Huber. 2016-01-14. Hints for leptonic CP violation or New Physics?. https://doi.org/10.1103/physrevlett.117.031801

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