Speaker
Gary Binder
(Lawrence Berkeley National Laboratory/University of California Berkeley)
Description
At the IceCube Neutrino Observatory, atmospheric and astrophysical neutrino fluxes become attenuated after passing through the Earth at energies above 40 TeV. This provides a unique method to measure the neutrino-nucleon cross section at energies significantly beyond previous accelerator-based approaches that reach 400 GeV. Here we report on the first measurement of neutrino absorption in the Earth, using a sample 10,784 energetic upward-going neutrino-induced muons observed in one year of IceCube data. From a fit to the two-dimensional distribution of muon energy and zenith angle, we measure the cross-section to be 1.30+0.21-0.19 (stat.) +0.39-0.43 (syst.) times the Standard Model expectation in an energy range from 6.3 TeV to 980 TeV.
Primary author
Dr
Sandra Miarecki
(United States Air Force Academy)
Co-authors
Gary Binder
(Lawrence Berkeley National Laboratory/University of California Berkeley)
Dr
Spencer Klein
(LBNL & UC Berkeley)