Speaker
Sebastian Euler
(RWTH Aachen University)
Description
With its low-energy extension DeepCore, the IceCube Neutrino Observatory
at the geographic South Pole is able to identify neutrino events with
energies as low as 10 GeV. This permits investigation of the oscillations
of atmospheric muon neutrinos by observing their zenith angle and energy
dependent disappearance. Maximum disappearance is expected for vertically
upward moving events at around 25 GeV. A first analysis has rejected the
no-oscillation hypothesis with a significance of more than 5 standard
deviations, using the zenith angle information only. Newer, more advanced
analyses include an energy estimator and use more refined event
selection techniques, yielding datasets with much larger statistics. This
talk will discuss these new methods and present the new results, which
improve the precision of the measurement of the oscillation parameters by
IceCube.
Primary author
Sebastian Euler
(RWTH Aachen University)
