First Observation of PeV-Energy Neutrinos with IceCube
We report on the observation of two neutrino-induced events which have an estimated deposited energy in the IceCube detector of 1.04±0.16 and 1.14±0.17 PeV, respectively, the highest neutrino energies observed so far. These events are consistent with fully contained particle showers induced by neutr...
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Online Access: | http://hdl.handle.net/1808/15830 https://doi.org/10.1103/PhysRevLett.111.021103 |
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ftunivkansas:oai:kuscholarworks.ku.edu:1808/15830 2023-05-15T17:14:19+02:00 First Observation of PeV-Energy Neutrinos with IceCube Aartsen, M. G. Besson, David Zeke IceCube Collaboration 2014-11-21T17:44:51Z http://hdl.handle.net/1808/15830 https://doi.org/10.1103/PhysRevLett.111.021103 unknown American Physical Society Aartsen et al. (IceCube Collaboration) "First Observation of PeV-Energy Neutrinos with IceCube." Phys. Rev. Lett. 111, 021103 – Published 8 July 2013 http://dx.doi.org/10.1103/PhysRevLett.111.021103 http://hdl.handle.net/1808/15830 doi:10.1103/PhysRevLett.111.021103 openAccess Article 2014 ftunivkansas https://doi.org/10.1103/PhysRevLett.111.021103 2022-08-26T13:15:37Z We report on the observation of two neutrino-induced events which have an estimated deposited energy in the IceCube detector of 1.04±0.16 and 1.14±0.17 PeV, respectively, the highest neutrino energies observed so far. These events are consistent with fully contained particle showers induced by neutral-current νe,μ,τ (ν¯e,μ,τ) or charged-current νe (ν¯e) interactions within the IceCube detector. The events were discovered in a search for ultrahigh energy neutrinos using data corresponding to 615.9 days effective live time. The expected number of atmospheric background is 0.082±0.004(stat)+0.041−0.057(syst). The probability of observing two or more candidate events under the atmospheric background-only hypothesis is 2.9×10−3 (2.8σ) taking into account the uncertainty on the expected number of background events. These two events could be a first indication of an astrophysical neutrino flux; the moderate significance, however, does not permit a definitive conclusion at this time. We acknowledge the support from the following agencies: U.S. National Science Foundation-Office of Polar Programs, U.S. National Science Foundation-Physics Division, University of Wisconsin Alumni Research Foundation, the Grid Laboratory Of Wisconsin (GLOW) grid infrastructure at the University of Wisconsin—Madison, the Open Science Grid (OSG) grid infrastructure; U.S. Department of Energy, and National Energy Research Scientific Computing Center, the Louisiana Optical Network Initiative (LONI) grid computing resources; Natural Sciences and Engineering Research Council of Canada, Compute Canada, and Compute West High Performance Computing; Swedish Research Council, Swedish Polar Research Secretariat, Swedish National Infrastructure for Computing (SNIC), and Knut and Alice Wallenberg Foundation, Sweden; German Ministry for Education and Research (BMBF), Deutsche Forschungsgemeinschaft (DFG), Helmholtz Alliance for Astroparticle Physics (HAP), Research Department of Plasmas with Complex Interactions (Bochum), Germany; Fund for Scientific ... Article in Journal/Newspaper National Science Foundation Office of Polar Programs Swedish Polar Research Secretariat The University of Kansas: KU ScholarWorks Canada Physical Review Letters 111 2 |
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Open Polar |
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The University of Kansas: KU ScholarWorks |
op_collection_id |
ftunivkansas |
language |
unknown |
description |
We report on the observation of two neutrino-induced events which have an estimated deposited energy in the IceCube detector of 1.04±0.16 and 1.14±0.17 PeV, respectively, the highest neutrino energies observed so far. These events are consistent with fully contained particle showers induced by neutral-current νe,μ,τ (ν¯e,μ,τ) or charged-current νe (ν¯e) interactions within the IceCube detector. The events were discovered in a search for ultrahigh energy neutrinos using data corresponding to 615.9 days effective live time. The expected number of atmospheric background is 0.082±0.004(stat)+0.041−0.057(syst). The probability of observing two or more candidate events under the atmospheric background-only hypothesis is 2.9×10−3 (2.8σ) taking into account the uncertainty on the expected number of background events. These two events could be a first indication of an astrophysical neutrino flux; the moderate significance, however, does not permit a definitive conclusion at this time. We acknowledge the support from the following agencies: U.S. National Science Foundation-Office of Polar Programs, U.S. National Science Foundation-Physics Division, University of Wisconsin Alumni Research Foundation, the Grid Laboratory Of Wisconsin (GLOW) grid infrastructure at the University of Wisconsin—Madison, the Open Science Grid (OSG) grid infrastructure; U.S. Department of Energy, and National Energy Research Scientific Computing Center, the Louisiana Optical Network Initiative (LONI) grid computing resources; Natural Sciences and Engineering Research Council of Canada, Compute Canada, and Compute West High Performance Computing; Swedish Research Council, Swedish Polar Research Secretariat, Swedish National Infrastructure for Computing (SNIC), and Knut and Alice Wallenberg Foundation, Sweden; German Ministry for Education and Research (BMBF), Deutsche Forschungsgemeinschaft (DFG), Helmholtz Alliance for Astroparticle Physics (HAP), Research Department of Plasmas with Complex Interactions (Bochum), Germany; Fund for Scientific ... |
format |
Article in Journal/Newspaper |
author |
Aartsen, M. G. Besson, David Zeke IceCube Collaboration |
spellingShingle |
Aartsen, M. G. Besson, David Zeke IceCube Collaboration First Observation of PeV-Energy Neutrinos with IceCube |
author_facet |
Aartsen, M. G. Besson, David Zeke IceCube Collaboration |
author_sort |
Aartsen, M. G. |
title |
First Observation of PeV-Energy Neutrinos with IceCube |
title_short |
First Observation of PeV-Energy Neutrinos with IceCube |
title_full |
First Observation of PeV-Energy Neutrinos with IceCube |
title_fullStr |
First Observation of PeV-Energy Neutrinos with IceCube |
title_full_unstemmed |
First Observation of PeV-Energy Neutrinos with IceCube |
title_sort |
first observation of pev-energy neutrinos with icecube |
publisher |
American Physical Society |
publishDate |
2014 |
url |
http://hdl.handle.net/1808/15830 https://doi.org/10.1103/PhysRevLett.111.021103 |
geographic |
Canada |
geographic_facet |
Canada |
genre |
National Science Foundation Office of Polar Programs Swedish Polar Research Secretariat |
genre_facet |
National Science Foundation Office of Polar Programs Swedish Polar Research Secretariat |
op_relation |
Aartsen et al. (IceCube Collaboration) "First Observation of PeV-Energy Neutrinos with IceCube." Phys. Rev. Lett. 111, 021103 – Published 8 July 2013 http://dx.doi.org/10.1103/PhysRevLett.111.021103 http://hdl.handle.net/1808/15830 doi:10.1103/PhysRevLett.111.021103 |
op_rights |
openAccess |
op_doi |
https://doi.org/10.1103/PhysRevLett.111.021103 |
container_title |
Physical Review Letters |
container_volume |
111 |
container_issue |
2 |
_version_ |
1766071679844352000 |