Speaker
Description
We report the measurement of the neutrino deep-inelastic scattering cross section using 10 years of IceCube data. At neutrino energies above several hundred GeV experimental constraints remain limited, with measurements from FASER extending to a few TeV and previous IceCube results probing energies above 6.3 TeV, leaving these regimes experimentally disconnected. This analysis extends sensitivity to lower energies while improving constraints at the highest energies, establishing a continuous experimental connection between accelerator-based and atmospheric or astrophysical neutrino measurements. By combining statistically independent track-like and shower-like event selections, sensitivity is achieved in the few-TeV range overlapping with FASER, alongside significantly improved precision at multi-TeV to PeV energies. The measurement spans the regime in which deep-inelastic scattering dominates neutrino interactions and provides a key input for modelling high-energy neutrino propagation and detection. These results are among the most precise determination to date in this energy range and unify previously disconnected experimental regimes.
