Probing C P Violation with Neutrino Disappearance Alone

Denton, Peter B.

doi:10.1103/PhysRevLett.133.031801

Title: Probing $C P$ Violation with Neutrino Disappearance Alone

Journal Article · 18 July 2024 · Physical Review Letters

DOI: https://doi.org/10.1103/PhysRevLett.133.031801 · OSTI ID:2474656

The best way to probe $C P$ 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 $C P$ 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 $C P$ is quite modest ( $1.6 σ$ with 6 years of JUNO and 13 years of DUNE), some values of $δ$ may be disfavored by $> 3 σ$ depending on the true value of $δ$ . Published by the American Physical Society 2024

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Research Organization:: Brookhaven National Laboratory (BNL), Upton, NY (United States)

Sponsoring Organization:: USDOE; USDOE Office of Science (SC), High Energy Physics (HEP)

Grant/Contract Number:: SC0012704

OSTI ID:: 2474656

Report Number(s):: BNL-225850-2024-JAAM; 031801

Journal Information:: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 3 Vol. 133; ISSN 0031-9007; ISSN PRLTAO

Publisher:: American Physical SocietyCopyright Statement

Country of Publication:: United States

Language:: English

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