2022/08/01 by Walsh, J. G. · 1 citation
#FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High Energy Physics - Phenomenology (hep-ph)
paper · doi:10.48550/arxiv.2208.01164
The T2K experiment is a long-baseline neutrino oscillation experiment which uses νμ and νμ beams to constrain CP-violating effects in a 3-flavor PMNS neutrino mixing model. Through νμ→νe and νμ→νe appearance channels, T2K is sensitive to CP-violating effects in neutrino mixing. An excess of νe candidates in the ν-beam mode is observed when compared to the CP conserving cases. T2K finds a best fit value of δCP=-1.97-0.70+0.97 using Feldman-Cousins corrected intervals and excludes CP-conserving values of δCP of 0 and π at the 90% CL. JCP=0 is also excluded at 2σ when using a flat prior in δCP, favoring negative values.