Combining sterile neutrino fits to short-baseline data with IceCube data
Name
PhysRevD.101.055020.pdf
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404.67 KB
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Author(s)
Moulai, Marjon H.
Argüelles, C.A.
Collin, G. H.
Conrad, J.M.
Diaz, A.
Shaevitz, M. H.
Date Issued
March 2020
Journal
Physical Review D
Publisher
American Physical Society
Citation
Moulai, M.H. et al. "Combining sterile neutrino fits to short-baseline data with IceCube data." Physical Review D 101 (March 2020): 055020 doi 10.1103/PhysRevD.101.055020 ©2020 Author(s)
Version
Final published version
Abstract
Recent global fits to short-baseline neutrino oscillation data have been performed finding preference for a sterile neutrino solution (3+1) over null. In the most recent iteration, it was pointed out that an unstable sterile neutrino (3+1+decay) may be a better description of the data. This is due to the fact that this model significantly reduces the tension between appearance and disappearance datasets. In this work, we add a 1-year IceCube dataset to the global fit obtaining new results for the standard 3+1 and 3+1+decay sterile neutrino scenarios. We find that the 3+1+decay model provides a better fit than the 3+1, even in the presence of IceCube, with reduced appearance to disappearance tension. The 3+1+decay model is a 5.4σ improvement over the null hypothesis and a 2.8σ improvement over the standard 3+1 model.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Institute for Data, Systems, and Society
Terms of Use
Creative Commons Attribution 3.0 unported license
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DOI of Published Version
https://doi.org/10.1103/PhysRevD.101.055020
