Particle Physics Seminar

"Significant Excess of Electron-Like Events in the MiniBooNE Short-Baseline Neutrino Experiment"

Presented by William Louis, Los Alamos National Lab

Thursday, August 2, 2018, 3:00 pm — Small Seminar Room, Bldg. 510

The MiniBooNE experiment at Fermilab observes a total electron-neutrino event excess in both neutrino and antineutrino running modes of 460.5 +- 95.8 events (4.8 sigma) in the energy range from 200-1250 MeV. The MiniBooNE L/E distribution and the allowed region from a two-neutrino oscillation fit to the data are consistent with the L/E distribution and allowed region reported by the LSND experiment. All of the major backgrounds are constrained by in-situ event measurements, so non-oscillation explanations would need to invoke new anomalous background processes. Although the data are fit with a two-neutrino oscillation model, other models may provide better fits to the data. The MiniBooNE event excess will be further studied by the Fermilab short-baseline neutrino (SBN) program.

Hosted by: Chao Zhang

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