Please read these instructions before posting any event on Fermilab Indico

The FERMI(FNAL) network authorization method has been removed. See news for more details.

18–24 Jun 2017
UC Irvine, Irvine, CA, USA
US/Pacific timezone

Neutrino absorption in the Earth and measurement of the neutrino-nucleon cross-section at multi-TeV energies with IceCube

20 Jun 2017, 18:10
20m
Pacific Ballroom AB (UC Irvine, Irvine, CA, USA)

Pacific Ballroom AB

UC Irvine, Irvine, CA, USA

Working Group Sessions Astroparticle Physics and Cosmology Working Group Working Group: Astroparticle physics and cosmology

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)

Presentation materials