Sterile neutrino fits to short baseline data
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Author(s)
Shaevitz, M.H.
Colling, Meaghan E.
Arguelles Delgado, Carlos A
Conrad, Janet Marie
Date Issued
February 2016
Journal
Nuclear Physics B
Publisher
Elsevier BV
Citation
Collin, G.H. et al. “Sterile Neutrino Fits to Short Baseline Data.” Nuclear Physics B 908 (July 2016): 354–365
Version
Final published version
Abstract
Neutrino oscillation models involving extra mass eigenstates beyond the standard three (3+N) are fit to global short baseline experimental data. We find that 3+1 has a best fit of Δm[subscript 41][superscript 2] = 1.75 eV[superscript 2] with a Δχ[subscript null-min][superscript 2] (dof) of 52.34 (3). The 3+2 fit has a Δχ[subscript null-min][superscript 2] (dof) of 56.99 (7). For the first time, we show Bayesian credible intervals for a 3+1 model. These are found to be in agreement with frequentist intervals. The results of these new fits favor a higher Δm2 value than previous studies, which may have an impact on future sterile neutrino searches such as the Fermilab SBN program.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Terms of Use
Creative Commons Attribution 4.0 International license
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1016/J.NUCLPHYSB.2016.02.024
