Denton PB. Probing CP Violation with Neutrino Disappearance Alone.
PHYSICAL REVIEW LETTERS 2024;
133:031801. [PMID:
39094130 DOI:
10.1103/physrevlett.133.031801]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Accepted: 06/17/2024] [Indexed: 08/04/2024]
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 ν_{e} in predominantly ν_{μ} 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 (1.6σ with 6 years of JUNO and 13 years of DUNE), some values of δ may be disfavored by >3σ depending on the true value of δ.
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