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Title: Updated Electron Neutrino Appearance Results from MiniBooNE

Abstract

New electron neutrino appearance results are presented for the MiniBooNE experiment at Fermilab with a total data set approximately a factor of 2 larger than previously reported. The new data has a significant excess in the low energy region that is consistent with the previously published MiniBooNE low energy excess results. If interpreted in a standard two-neutrino, $$\nu_\mu\rightarrow\nu_e$$, oscillation model, the best oscillation fit to the neutrino-mode excess has a $$\chi^2$$ probability of ~15\% while the background-only fit has a probability of $$0.06\%$$ relative to the best oscillation fits. All of the major backgrounds are constrained by in-situ event measurements and so non-oscillation explanations would need to invoke new anomalous background processes or other new physics. The MiniBooNE excess is consistent with the LSND observations as a function of distance/energy ($L/E$) in the range of overlap. A 3+1 sterile oscillation interpretation for the MiniBooNE/LSND appearance data is in tension with current disappearance results and may require more complicated models and/or new physics.

Authors:
 [1]
  1. Columbia U.
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Contributing Org.:
MiniBooNE
OSTI Identifier:
1527393
Report Number(s):
FERMILAB-CONF-18-775-ND
1733452
DOE Contract Number:  
AC02-07CH11359
Resource Type:
Conference
Journal Name:
PoS
Additional Journal Information:
Journal Volume: NOW2018; Conference: Neutrino Oscillation Workshop, Ostuni , Brindisi, Italy, 09/09-09/16/2018
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Shaevitz, Michael H. Updated Electron Neutrino Appearance Results from MiniBooNE. United States: N. p., 2019. Web. doi:10.22323/1.337.0010.
Shaevitz, Michael H. Updated Electron Neutrino Appearance Results from MiniBooNE. United States. doi:10.22323/1.337.0010.
Shaevitz, Michael H. Tue . "Updated Electron Neutrino Appearance Results from MiniBooNE". United States. doi:10.22323/1.337.0010. https://www.osti.gov/servlets/purl/1527393.
@article{osti_1527393,
title = {Updated Electron Neutrino Appearance Results from MiniBooNE},
author = {Shaevitz, Michael H.},
abstractNote = {New electron neutrino appearance results are presented for the MiniBooNE experiment at Fermilab with a total data set approximately a factor of 2 larger than previously reported. The new data has a significant excess in the low energy region that is consistent with the previously published MiniBooNE low energy excess results. If interpreted in a standard two-neutrino, $\nu_\mu\rightarrow\nu_e$, oscillation model, the best oscillation fit to the neutrino-mode excess has a $\chi^2$ probability of ~15\% while the background-only fit has a probability of $0.06\%$ relative to the best oscillation fits. All of the major backgrounds are constrained by in-situ event measurements and so non-oscillation explanations would need to invoke new anomalous background processes or other new physics. The MiniBooNE excess is consistent with the LSND observations as a function of distance/energy ($L/E$) in the range of overlap. A 3+1 sterile oscillation interpretation for the MiniBooNE/LSND appearance data is in tension with current disappearance results and may require more complicated models and/or new physics.},
doi = {10.22323/1.337.0010},
journal = {PoS},
number = ,
volume = NOW2018,
place = {United States},
year = {2019},
month = {1}
}

Conference:
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