Scientific article
OA Policy
English

Search for Unstable Sterile Neutrinos with the IceCube Neutrino Observatory

ContributorsIceCube Collaboration
Published inPhysical review letters, vol. 129, no. 15, 151701
Publication date2022
First online date2022-10-07
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.

Keywords
  • Neutrino: sterile
  • Neutrino: model
  • Decay: model
  • Neutrino: decay
  • IceCube
  • Observatory
  • Stability
  • Neutrino/mu: atmosphere
  • Neutrino: oscillation
  • Neutrino: mixing angle: measured
  • Neutrino: mass difference
  • Coupling constant
  • Experimental results
Citation (ISO format)
IceCube Collaboration. Search for Unstable Sterile Neutrinos with the IceCube Neutrino Observatory. In: Physical review letters, 2022, vol. 129, n° 15, p. 151701. doi: 10.1103/physrevlett.129.151801
Main files (1)
Article (Published version)
Identifiers
Journal ISSN0031-9007
29views
8downloads

Technical informations

Creation11/06/2024 16:22:51
First validation20/06/2024 09:06:01
Update time20/06/2024 09:06:01
Status update20/06/2024 09:06:01
Last indexation01/11/2024 11:01:16
All rights reserved by Archive ouverte UNIGE and the University of GenevaunigeBlack