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arXiv · 2309.03262

CP-Violation with Neutrino Disappearance Alone

Peter B. Denton
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Abstract

The best way to probe CP violation in the lepton sector is with long-baseline accelerator neutrino experiments in the appearance mode: the appearance of $\nu_e$ in predominantly $\nu_\mu$ beams. Here we show that it is possible to discover CP violation with disappearance experiments only, by combining JUNO for electron neutrinos and DUNE or Hyper-Kamiokande for muon neutrinos. While the maximum sensitivity to discover CP is quite modest ($1.6\sigma$ with 6 years of JUNO and 13 years of DUNE), some values of $\delta$ may be disfavored by $>3\sigma$ depending on the true value of $\delta$.

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Peter B. Denton. 2023-09-06. CP-Violation with Neutrino Disappearance Alone. https://doi.org/10.1103/physrevlett.133.031801

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