First Constraints on the Complete Neutrino Mixing Matrix with a Sterile Neutrino
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PhysRevLett.117.221801.pdf
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Author(s)
Conrad, J. M.
Collin, G. H.
Arguelles Delgado, Carlos A
Conrad, Janet Marie
Date Issued
November 2016
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Collin, G. H. et al. “First Constraints on the Complete Neutrino Mixing Matrix with a Sterile Neutrino.” Physical Review Letters 117.22 (2016): n. pag. © 2016 American Physical Society
Version
Final published version
Abstract
Neutrino oscillation models involving one extra mass eigenstate beyond the standard three (3+1) are fit to global short baseline experimental data and the recent IceCube ν[subscript μ] + [bar over v][subscript μ] disappearance search result. We find a best fit of Δm[subscript 41][superscript 2]=1.75 eV[superscript 2] with Δx[subscript null-min][superscript 2]/d.o.f. of 50.61/4. We find that the combined IceCube and short baseline data constrain θ[subscript 34] to <80°(<6°) at 90% C.L. for Δm[subscript 41][superscript 2]≈2(6) eV[superscript 2], which is improved over present limits. Incorporating the IceCube information provides the first constraints on all entries of the 3+1 mixing matrix.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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DOI of Published Version
https://doi.org/10.1103/PhysRevLett.117.221801
