Neutrino mass analysis and systematics of the KATRIN experiment, using CMKAT

The Karlsruhe Tritium Neutrino (KATRIN) experiment aims to make a precision measurement of the effective neutrino mass by leveraging the kinematics of tritium beta decay, with a 3-year sensitivity of 0.2eV (90% C.L.). Recent run campaigns, both in standard mode (using molecular tritium) and calibration mode (using 83mKr ), have provided a wealth of data. This data was analyzed using the CMKAT analysis framework, which models the integrated spectra using a convolution of the source decay physics and the experiment's response function. Additional information relating to construction and validation of CMKAT is included. Finally, results from fits to the second neutrino mass measurement campaign (KNM2) are presented, and confidence intervals on the extracted effective neutrino mass are constructed; selected systematic studies are included.