Search for Unstable Sterile Neutrinos with the IceCube Neutrino Observatory

(IceCube Collaboration)

doi:10.1103/PhysRevLett.129.151801

Search for Unstable Sterile Neutrinos with the IceCube Neutrino Observatory

(IceCube Collaboration)

Physics and Astronomy

Loyola University Chicago
German Electron Synchrotron
University of Canterbury
Université libre de Bruxelles
University of Copenhagen
Oskar Klein Centre
TU Dortmund University
Karlsruhe Institute of Technology
University of Delaware
Marquette University
Pennsylvania State University
Friedrich-Alexander University Erlangen-Nürnberg
Harvard University
University of Wisconsin-Madison
Massachusetts Institute of Technology
South Dakota School of Mines & Technology
University of California at Irvine
University of California at Berkeley
Ohio State University
University of Wuppertal
Ruhr University Bochum
Uppsala University
Technical University of Munich
University of Rochester
University of Maryland, College Park
University of Kansas
Lawrence Berkeley National Laboratory
RWTH Aachen University
Johannes Gutenberg University Mainz
Georgia Institute of Technology
University of Geneva

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9 Scopus citations

Abstract

We present a search for an unstable sterile neutrino by looking for a resonant signal in eight years of atmospheric νμ data collected from 2011 to 2019 at the IceCube Neutrino Observatory. Both the (stable) three-neutrino and the 3+1 sterile neutrino models are disfavored relative to the unstable sterile neutrino model, though with p values of 2.8% and 0.81%, respectively, we do not observe evidence for 3+1 neutrinos with neutrino decay. The best-fit parameters for the sterile neutrino with decay model from this study are Δm412=6.7-2.5+3.9 eV2, sin22θ24=0.33-0.17+0.20, and g2=2.5π±1.5π, where g is the decay-mediating coupling. The preferred regions of the 3+1+decay model from short-baseline oscillation searches are excluded at 90% C.L.

Original language	English
Article number	151801
Journal	Physical Review Letters
Volume	129
Issue number	15
DOIs	https://doi.org/10.1103/PhysRevLett.129.151801
State	Published - Oct 7 2022

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10.1103/PhysRevLett.129.151801

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@article{fe45c173b9604677a57cac3f31b5335e,

title = "Search for Unstable Sterile Neutrinos with the IceCube Neutrino Observatory",

abstract = "We present a search for an unstable sterile neutrino by looking for a resonant signal in eight years of atmospheric νμ data collected from 2011 to 2019 at the IceCube Neutrino Observatory. Both the (stable) three-neutrino and the 3+1 sterile neutrino models are disfavored relative to the unstable sterile neutrino model, though with p values of 2.8\% and 0.81\%, respectively, we do not observe evidence for 3+1 neutrinos with neutrino decay. The best-fit parameters for the sterile neutrino with decay model from this study are Δm412=6.7-2.5+3.9 eV2, sin22θ24=0.33-0.17+0.20, and g2=2.5π±1.5π, where g is the decay-mediating coupling. The preferred regions of the 3+1+decay model from short-baseline oscillation searches are excluded at 90\% C.L.",

author = "\{(IceCube Collaboration)\} and R. Abbasi and M. Ackermann and J. Adams and Aguilar, \{J. A.\} and M. Ahlers and M. Ahrens and Alameddine, \{J. M.\} and Alves, \{A. A.\} and Amin, \{N. M.\} and K. Andeen and T. Anderson and G. Anton and C. Arg{\"u}elles and Y. Ashida and S. Axani and X. Bai and \{Balagopal V\}, A. and Barwick, \{S. W.\} and B. Bastian and V. Basu and S. Baur and R. Bay and Beatty, \{J. J.\} and Becker, \{K. H.\} and \{Becker Tjus\}, J. and J. Beise and C. Bellenghi and S. Benda and S. Benzvi and D. Berley and E. Bernardini and Besson, \{D. Z.\} and G. Binder and D. Bindig and E. Blaufuss and S. Blot and M. Boddenberg and F. Bontempo and Book, \{J. Y.\} and J. Borowka and S. B{\"o}ser and O. Botner and J. B{\"o}ttcher and E. Bourbeau and F. Bradascio and J. Braun and B. Brinson and S. Bron and J. Brostean-Kaiser and J. Kiryluk",

note = "Publisher Copyright: {\textcopyright} 2022 authors. Published by the American Physical Society.",

year = "2022",

month = oct,

day = "7",

doi = "10.1103/PhysRevLett.129.151801",

language = "English",

volume = "129",

journal = "Physical Review Letters",

issn = "0031-9007",

number = "15",

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T1 - Search for Unstable Sterile Neutrinos with the IceCube Neutrino Observatory

AU - (IceCube Collaboration)

AU - Abbasi, R.

AU - Ackermann, M.

AU - Adams, J.

AU - Aguilar, J. A.

AU - Ahlers, M.

AU - Ahrens, M.

AU - Alameddine, J. M.

AU - Alves, A. A.

AU - Amin, N. M.

AU - Andeen, K.

AU - Anderson, T.

AU - Anton, G.

AU - Argüelles, C.

AU - Ashida, Y.

AU - Axani, S.

AU - Bai, X.

AU - Balagopal V, A.

AU - Barwick, S. W.

AU - Bastian, B.

AU - Basu, V.

AU - Baur, S.

AU - Bay, R.

AU - Beatty, J. J.

AU - Becker, K. H.

AU - Becker Tjus, J.

AU - Beise, J.

AU - Bellenghi, C.

AU - Benda, S.

AU - Benzvi, S.

AU - Berley, D.

AU - Bernardini, E.

AU - Besson, D. Z.

AU - Binder, G.

AU - Bindig, D.

AU - Blaufuss, E.

AU - Blot, S.

AU - Boddenberg, M.

AU - Bontempo, F.

AU - Book, J. Y.

AU - Borowka, J.

AU - Böser, S.

AU - Botner, O.

AU - Böttcher, J.

AU - Bourbeau, E.

AU - Bradascio, F.

AU - Braun, J.

AU - Brinson, B.

AU - Bron, S.

AU - Brostean-Kaiser, J.

AU - Kiryluk, J.

PY - 2022/10/7

Y1 - 2022/10/7

N2 - We present a search for an unstable sterile neutrino by looking for a resonant signal in eight years of atmospheric νμ data collected from 2011 to 2019 at the IceCube Neutrino Observatory. Both the (stable) three-neutrino and the 3+1 sterile neutrino models are disfavored relative to the unstable sterile neutrino model, though with p values of 2.8% and 0.81%, respectively, we do not observe evidence for 3+1 neutrinos with neutrino decay. The best-fit parameters for the sterile neutrino with decay model from this study are Δm412=6.7-2.5+3.9 eV2, sin22θ24=0.33-0.17+0.20, and g2=2.5π±1.5π, where g is the decay-mediating coupling. The preferred regions of the 3+1+decay model from short-baseline oscillation searches are excluded at 90% C.L.

AB - We present a search for an unstable sterile neutrino by looking for a resonant signal in eight years of atmospheric νμ data collected from 2011 to 2019 at the IceCube Neutrino Observatory. Both the (stable) three-neutrino and the 3+1 sterile neutrino models are disfavored relative to the unstable sterile neutrino model, though with p values of 2.8% and 0.81%, respectively, we do not observe evidence for 3+1 neutrinos with neutrino decay. The best-fit parameters for the sterile neutrino with decay model from this study are Δm412=6.7-2.5+3.9 eV2, sin22θ24=0.33-0.17+0.20, and g2=2.5π±1.5π, where g is the decay-mediating coupling. The preferred regions of the 3+1+decay model from short-baseline oscillation searches are excluded at 90% C.L.

UR - https://www.scopus.com/pages/publications/85139876147

U2 - 10.1103/PhysRevLett.129.151801

DO - 10.1103/PhysRevLett.129.151801

M3 - Article

C2 - 36269964

AN - SCOPUS:85139876147

SN - 0031-9007

VL - 129

JO - Physical Review Letters

JF - Physical Review Letters

IS - 15

M1 - 151801

ER -

Search for Unstable Sterile Neutrinos with the IceCube Neutrino Observatory

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