Measurements of νμ​-bar and νμ-bar​+νμ​ charged-current cross-sections without detected pions or protons on water and hydrocarbon at a mean anti-neutrino energy of 0.86 GeV

We report measurements of the flux-integrated |νμ-bar​| and |νμ-bar+νμ​| charged-current cross-sections on water and hydrocarbon targets using the T2K anti-neutrino beam with a mean beam energy of 0.86 GeV. The signal is defined as the (anti-)neutrino charged-current interaction with one induced |μ±| and no detected charged pion or proton. These measurements are performed using a new WAGASCI module recently added to the T2K setup in combination with the INGRID Proton Module.

• arXiv preprint: https://arxiv.org/abs/2004.13989, https://arxiv.org/abs/2004.13989
• Reference: PTEP 2021 (2021) 4, 043C01
• DOI: 10.1093/ptep/ptab014
• Data release: https://doi.org/10.5281/zenodo.7065209