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T: Fachverband Teilchenphysik
T 41: Neutrinophysik (Theorie)
T 41.9: Vortrag
Montag, 24. März 2014, 18:45–19:00, P108
Investigation of neutrino-nucleon interactions in the context of IceCube — •Mike Kroll1, Francis Halzen2, and Julia Tjus3 for the IceCube collaboration — 1Fakultät Physik, Technische Universität Dortmund, Deutschland — 2University of Wisconsin-Madison, USA — 3Fakultät für Physik und Astronomie, Ruhr-Universität Bochum, Deutschland
Without considering absorption in the Earth, higher neutrino energy lead to easier detection detection because the probability that the neutrino interacts in the detector with a nucleon is proportional to the neutrino cross section, which grows with energy.
It is generally accepted that the neutrino cross section is calculable with good precision in perturbative QCD. However, the screening of the large number of partons (overwhelmingly gluons) that make up a high energy proton result into an increase (a decrease) of the neutrino-proton interaction cross section below (above) the saturation scale which corresponds to a neutrino energy close to 0.1 EeV.
The goal of this project is to evaluate this saturation effect, constraining its magnitude in neutrino-proton (nucleus) interactions by exploiting new high energy measurements of proton-proton collisions at the LHC and by the Auger cosmic ray experiment.
In this talk, we will discuss how this affects high-energy neutrino measurements with IceCube at extremely high energies.