Improved measurement of the flux-integrated ν_µCC-0π cross section on carbon and Oxygen with the FGD1 and FGD2 detectors

The T2K experiment is a state of the art long baseline neutrino experiment with the physics objective of measuring neutrino oscillation parameters. Latest oscillation measurements have shown that the dominant systematic uncertainty is from the modeling of neutrino interactions. The dominant interaction channel at the T2K beam energy is the Charged Current Quasi-Elastic (CCQE) like scattering, with one muon and nucleons in the final state. Since the T2K experiment uses a water Cherenkov far detector (Super K), it is essential to have a good understanding of the neutrino interaction cross section on Oxygen. This can be achieved thorough measurement of neutrino interactions on Carbon and Oxygen using the T2K near detector, which contains Carbon and Water targets. Moreover, the Oxygen over Carbon cross section ratio is useful because it cancels beam systematics. This study aims to calculate the cross section for muon neutrino charged current interactions with zero pions in the final state (ν_µCC-0π) on Carbon and Oxygen using the full T2K phase-I data set and the latest result will be presented.