Evidence for High-Energy Extraterrestrial Neutrinos at the IceCube Detector
Research output: Contribution to journal › Journal article › Research › peer-review
We report on results of an all-sky search for high-energy neutrino events interacting within the IceCube neutrino detector conducted between May 2010 and May 2012. The search follows up on the previous detection of two PeV neutrino events, with improved sensitivity and extended energy coverage down to about 30 TeV. Twenty-six additional events were observed, substantially more than expected from atmospheric backgrounds. Combined, both searches reject a purely atmospheric origin for the 28 events at the 4s level. These 28 events, which include the highest
energy neutrinos ever observed, have flavors, directions, and energies inconsistent with those expected from the atmospheric muon and neutrino backgrounds. These properties are, however, consistent with generic predictions for an additional component of extraterrestrial origin.
energy neutrinos ever observed, have flavors, directions, and energies inconsistent with those expected from the atmospheric muon and neutrino backgrounds. These properties are, however, consistent with generic predictions for an additional component of extraterrestrial origin.
Original language | English |
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Article number | 12428562 |
Journal | Science |
Volume | 342 |
Issue number | 6161 |
Number of pages | 7 |
ISSN | 0036-8075 |
DOIs | |
Publication status | Published - 22 Nov 2013 |
Externally published | Yes |
ID: 96234161