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T: Fachverband Teilchenphysik
T 38: Neutrino Physics III
T 38.2: Vortrag
Dienstag, 1. April 2025, 16:30–16:45, VG 3.103
Neutrino oscillations parameters estimation with NOvA and T2K public data — •Sofia Lonardi — Ludwig-Maximilians-Universität (LMU), Theresienstraße 37, 80333 Munich, Germany — Technical University Munich (TUM), James-Franck-Strasse 1, 85748 Garching, Germany
Neutrino flavour oscillations are a promising open window into physics beyond the standard model. Numerous experiments provide a way to estimate the angles of the mixing matrix and the mass differences. Most parameters have been determined with increasing precision and agreement between different experiments, nevertheless, some questions still need to be addressed regarding the mixing angle Θ23 and the CP phase δCP dependence on the neutrino mass ordering. Notably, T2K and NOvA experiments show contrasting tendencies depending on the measurement channel. This study focuses on NOvA and T2K: new independent analyses are performed using publicly accessible data, and the official results are reproduced to demonstrate their validity. The parameters are estimated through likelihood maximization, and agreements and tensions between the two datasets are evaluated in a joint fit. This talk will explain the individual data analysis chains and the global fitting setup, discussing the obtained results in the broader context of the global neutrino oscillations landscape.
Keywords: Neutrino oscillations; NOvA; T2K; parameters estimation