NA61/SHINE Hadron Production Measurements for Accelerator-Based Neutrino Beams

Long-baseline neutrino experiments, such as NOvA, T2K, and DUNE, are working to measure neutrino oscillaCon parameters and will benefit from reduced neutrino flux uncertainCes. The dominant source of neutrino flux uncertainty arises from an insufficient knowledge of parent hadron yields from neutrino producCon targets. Using external hadron producCon measurements, we can significantly reduce these flux uncertainCes. The NA61/SHINE experiment at CERN provides measurements of many hadronic interacCons for this purpose. Recent results from NA61, including 120 GeV incident proton measurements relevant to NuMI and DUNE, will be discussed, as well as progress on a measurement of hadron yields from a NuMI replica target.