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HEP Seminar: First Evidence of High-Energy Extraterrestrial Neutrinos at IceCube

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Claudio Kopper, University of Wisconsin, Madison
When
22 January 2014 from 2:30 PM to 3:30 PM
Where
339 Davey Laboratory
Contact Name
Contact Phone
814-863-5943
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The spectrum of cosmic rays includes the most energetic particles ever
observed. The mechanism of their acceleration and their sources are,
however, still mostly unknown. Observing astrophysical neutrinos can
help solve this problem. Because neutrinos are produced in hadronic
interactions and are neither absorbed nor deflected, they will point
directly back to their source. This talk will cover searches for high-energy neutrinos (> 100 TeV) at the IceCube neutrino observatory,
which have recently produced the first evidence for a flux beyond
standard expectations from neutrinos generated in the Earth's
atmosphere. This includes the detection of two events with energies
above 1 PeV -- the highest energy neutrinos ever observed. The current
status of these astrophysical neutrino searches and prospects for the
future will be discussed.

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