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DTSTART;TZID=America/Los_Angeles:20170310T120000
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DTSTAMP:20260528T002047
CREATED:20170203T190600Z
LAST-MODIFIED:20170301T171356Z
UID:129-1489147200-1489150800@inpa.lbl.gov
SUMMARY:Sandra Miarecki  - Earth vs. Neutrinos: first measurements of neutrino absorption in the Earth and the muon neutrino-to-nucleon cross section above 1 TeV with the IceCube Detector
DESCRIPTION:Bio: \nSandy Miarecki is a retired Air Force test pilot\, PhD graduate of the University of California-Berkeley\, and an affiliate member of LBL after completing her dissertation research at LBL.  She is currently an assistant professor of physics at the US Air Force Academy in Colorado Springs. \nThe IceCube Detector at the South Pole was constructed to measure the flux of high-energy neutrinos and to try to identify their cosmic sources. In addition to these astrophysical neutrinos\, IceCube also detects the neutrinos that result from cosmic ray interactions with the atmosphere. These atmospheric neutrinos can be used to measure the total muon neutrino-to-nucleon cross section by measuring neutrino absorption in the Earth for the first time. The measurement involves isolating a sample of 10\,784 Earth-transiting muons detected by IceCube in its 79-string configuration. The cross-section is determined using a two-dimensional fit in measured muon energy and zenith angle and is presented as a multiple of the Standard Model expectation as calculated by Cooper-Sarkar\, Mertsch\, and Sarkar in 2011. A multiple of 1.0 would indicate agreement with the Standard Model. The results of this analysis find the multiple to be 1.30 (+0.21 -0.19 statistical) (+0.40 -0.44 systematic) for the neutrino energy range of 6.3 to 980 TeV\, which is in agreement with the Standard Model expectation.
URL:https://inpa.lbl.gov/event/raul-hennings-yeomans-ucb-tentative/
LOCATION:50A-5132- Sessler\, 50A-5132 Sessler Conference Room\, CA
ORGANIZER;CN="Kawana Yancey":MAILTO:kyancey@lbl.gov
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