Description
T2K is a long-baseline neutrino experiment located in Japan, with its primary physics goals being to precisely measure the oscillation parameters $\sin^{2}\theta_{23}$ and $\Delta {m}^{2}_{32}$, and to constrain the CP-violating phase $\delta_{CP}$. T2K has made several improvements to its oscillation analysis, including an improved neutrino interaction and flux model, new near-detector selections with improved proton and photon tagging, and the addition of a new, higher energy far-detector sample, providing a significant 38% statistical increase in neutrino-mode $\nu_{\mu}$-like events. T2K has three independent analyses that differ in their statistical and analytical choices. Of these, MaCh3 is unique in its application of a Bayesian Markov Chain Monte Carlo (MCMC) fitting method, and its ability to fit both near- and far-detector data and parameters in a unified joint-fit framework. This poster will explain the fundamental aspects of the MaCh3 fit, focusing on the extraction of oscillation parameter values using a joint-fit to near- and far-detector data, and present the latest T2K oscillation analysis results.
| Collaboration | T2K |
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