Speaker
Description
The IceCube Neutrino Observatory is a neutrino detector at the South Pole, which uses the Cherenkov radiation emitted by charged secondaries from neutrino-nucleon interactions in the ice to reconstruct neutrino events. Events where this interaction vertex is contained inside the detector volume are termed “starting events”. At energies ranging from 1 TeV to 100 TeV, starting event samples are dominated by background from atmospheric muons and neutrinos, necessitating specialized veto techniques for suppression.
We present the Medium Energy Starting Events (MESE) selection, which employs these improved methods to measure the flux of diffuse extragalactic neutrinos down to 1 TeV from the entire sky. We will present a measurement of the spectrum of the diffuse flux of neutrinos, which demonstrates strong evidence for structure beyond a single power law.
