Erik Zimmerman

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C. Albright, G. Anderson, V. Barger, R. Bernstein, G. Blazey, A. Bodek, E. Buckley–Geer, A. Bueno, M. Campanelli, D. Carey, D. Casper, A. Cervera, C. Crisan, F. DeJongh, S. Eichblatt, A. Erner, R. Fernow, D. Finley, J. Formaggio, J. Gallardo, S. Geer, M. Goodman, D. Harris, E. Hawker, J. Hill, R. Johnson, D. Kaplan, S. Kahn, B. Kayser, E. Kearns, B.J. King,(More)
The T2K experiment observes indications of ν(μ) → ν(e) appearance in data accumulated with 1.43×10(20) protons on target. Six events pass all selection criteria at the far detector. In a three-flavor neutrino oscillation scenario with |Δm(23)(2)| = 2.4×10(-3)  eV(2), sin(2)2θ(23) = 1 and sin(2)2θ(13) = 0, the expected number of such events is 1.5±0.3(syst).(More)
A. Alavi-Harati, T. Alexopoulos, M. Arenton, K. Arisaka, S. Averitte, R. F. Barbosa,* A. R. Barker, M. Barrio, L. Bellantoni, A. Bellavance, J. Belz, D. R. Bergman, E. Blucher, G. J. Bock, C. Bown, S. Bright, E. Cheu, S. Childress, R. Coleman, M. D. Corcoran, G. Corti, B. Cox, A. R. Erwin, R. Ford, A. Glazov, A. Golossanov, G. Graham, J. Graham, E.(More)
The MiniBooNE experiment at Fermilab reports results from an analysis of ν[over ¯](e) appearance data from 11.27×10(20) protons on target in the antineutrino mode, an increase of approximately a factor of 2 over the previously reported results. An event excess of 78.4±28.5 events (2.8σ) is observed in the energy range 200<E(ν)(QE)<1250 MeV. If interpreted(More)
The MiniBooNE experiment at Fermilab reports results from a search for ¯ν_{μ}→¯ν_{e} oscillations, using a data sample corresponding to 5.66×10²⁰ protons on target. An excess of 20.9±14.0 events is observed in the energy range 475<E_{ν}^{QE}<1250  MeV, which, when constrained by the observed ¯ν_{μ} events, has a probability for consistency with the(More)
The MiniBooNE Collaboration observes unexplained electronlike events in the reconstructed neutrino energy range from 200 to 475 MeV. With 6.46x10;{20} protons on target, 544 electronlike events are observed in this energy range, compared to an expectation of 415.2+/-43.4 events, corresponding to an excess of 128.8+/-20.4+/-38.3 events. The shape of the(More)
The T2K experiment has observed electron neutrino appearance in a muon neutrino beam produced 295 km from the Super-Kamiokande detector with a peak energy of 0.6 GeV. A total of 28 electron neutrino events were detected with an energy distribution consistent with an appearance signal, corresponding to a significance of 7.3σ when compared to 4.92±0.55(More)
The observation of neutrino oscillations is clear evidence for physics beyond the standard model. To make precise measurements of this phenomenon, neutrino oscillation experiments, including MiniBooNE, require an accurate description of neutrino charged current quasielastic (CCQE) cross sections to predict signal samples. Using a high-statistics sample of(More)
New data from the T2K neutrino oscillation experiment produce the most precise measurement of the neutrino mixing parameter θ23. Using an off-axis neutrino beam with a peak energy of 0.6 GeV and a data set corresponding to 6.57×10(20) protons on target, T2K has fit the energy-dependent νμ oscillation probability to determine oscillation parameters. The 68%(More)
The MiniBooNE Collaboration reports a search for νμ and ν̄μ disappearance in the ∆m 2 region of a few eV . These measurements are important for constraining models with extra types of neutrinos, extra dimensions and CPT violation. Fits to the shape of the νμ and ν̄μ energy spectra reveal no evidence for disappearance at 90% confidence level (CL) in either(More)