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- Collection:
- Clark Atlanta University Faculty Publications
- Title:
- Search for Unstable Sterile Neutrinos with the IceCube Neutrino Observatory
- Creator:
- Abbasi, Rezvan, Department of Physics, Loyola University Chicago
Japaridze, George, CTSPS, Clark-Atlanta University - Date of Original:
- 2022-10
- Subject:
- Degrees, Academic
Dissertations, Academic - Location:
- United States, Georgia, Fulton County, Atlanta, 33.749, -84.38798
- Medium:
- articles
- Type:
- Text
- Format:
- application/pdf
- Description:
- We present a search for an unstable sterile neutrino by looking for a resonant signal in eight years of atmospheric ?? data collected from 2011 to 2019 at the IceCube Neutrino Observatory. Both the (table)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 ?m2 41 � 6.7�3.9 ?2.5 eV2, sin22?24 � 0.33�0.20 ?0.17 , and g2 � 2.5? 1.5?, where g is the decaymediating coupling. The preferred regions of the 3 � 1 � decay model from short-baseline oscillation searches are excluded at 90% C.L
- Metadata URL:
- http://hdl.handle.net/20.500.12322/cau.ir:2022_abbasi_rezvan_george_japaridze_8
- IIIF manifest:
- []
- Original Collection:
- Physical Review Letters
- Holding Institution:
- Atlanta University Center Robert W. Woodruff Library
- Rights: