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Evidence for muon neutrino oscillation in an accelerator-based experiment

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arxiv hep-ex/0411038 v3 pith:STQECVDJ submitted 2004-11-10 hep-ex

classification hep-ex
keywords neutrinomuonoscillationenergyexperimentresultsaccelerator-basedaccelerator-produced
verification ladder T0 review T1 audit T2 compute T3 formal

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We present results for muon neutrino oscillation in the KEK to Kamioka (K2K) long-baseline neutrino oscillation experiment. K2K uses an accelerator-produced muon neutrino beam with a mean energy of 1.3 GeV directed at the Super-Kamiokande detector. We observed the energy dependent disappearance of muon neutrino, which we presume have oscillated to tau neutrino. The probability that we would observe these results if there is no neutrino oscillation is 0.0050% (4.0 sigma).

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Forward citations

Cited by 4 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. OpenAlex reports about 463 citations worldwide. Full citation record

  1. Lepton number violation at hadron colliders via pseudo-Dirac heavy neutral leptons

    hep-ph 2026-06 unverdicted novelty 6.0 of 10

    Damped oscillations alleviate LN violation suppression for pseudo-Dirac HNLs, improving collider sensitivities and allowing distinction from the double-Majorana limit.

  2. Another relation among the neutrino mass-squared differences?

    hep-ph 2026-01 conditional novelty 5.0 of 10

    The ratio (√Δm²31 + √Δm²21)/(√Δm²31 − √Δm²21) is claimed to be exactly √2, implying m1 ≈ 0 and absolute neutrino masses near 0.009 eV and 0.050 eV.

  3. Neutrino oscillation data and a pseudo-Dirac heavy neutral lepton

    hep-ph 2026-06 unverdicted novelty 4.0 of 10

    In the minimal pseudo-Dirac HNL scenario, light-neutrino oscillation data fixes an ellipse in the active flavour simplex for leading active-heavy interactions via a single complex amplitude and Majorana phase.

  4. 2020 Global reassessment of the neutrino oscillation picture

    hep-ph 2020-06 unverdicted novelty 3.0 of 10

    Updated global fit of neutrino oscillation data gives precise measurements of mixing parameters with a 2.5 sigma preference for normal mass ordering.

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