Rights statement: © 2009 The American Physical Society
Final published version, 222 KB, PDF document
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Unexplained excess of electron-like events from a 1-GeV neutrino beam
AU - Aguilar-Arevalo, A.A.
AU - Nowak, Jaroslaw
AU - MiniBooNE Collaboration
N1 - © 2009 The American Physical Society
PY - 2009/3/11
Y1 - 2009/3/11
N2 - The MiniBooNE Collaboration observes unexplained electronlike events in the reconstructed neutrino energy range from 200 to 475 MeV. With 6.46×1020 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 excess in several kinematic variables is consistent with being due to either νe and ν̅ e charged-current scattering or νμ neutral-current scattering with a photon in the final state. No significant excess of events is observed in the reconstructed neutrino energy range from 475 to 1250 MeV, where 408 events are observed compared to an expectation of 385.9±35.7 events.
AB - The MiniBooNE Collaboration observes unexplained electronlike events in the reconstructed neutrino energy range from 200 to 475 MeV. With 6.46×1020 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 excess in several kinematic variables is consistent with being due to either νe and ν̅ e charged-current scattering or νμ neutral-current scattering with a photon in the final state. No significant excess of events is observed in the reconstructed neutrino energy range from 475 to 1250 MeV, where 408 events are observed compared to an expectation of 385.9±35.7 events.
U2 - 10.1103/PhysRevLett.102.101802
DO - 10.1103/PhysRevLett.102.101802
M3 - Journal article
VL - 102
JO - Physical review letters
JF - Physical review letters
SN - 1079-7114
IS - 10
M1 - 101802
ER -