Karlsruhe 2024 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 58: Neutrino physics 8

T 58.6: Vortrag

Mittwoch, 6. März 2024, 17:15–17:30, Geb. 30.22: Gaede-HS

Neutrino-nucleus cross-section measurement strategies from the T2K experiment — •Liam O’Sullivan — JGU Mainz, Mainz, Germany

In both current and future neutrino oscillation experiments, an accurate understanding of neutrino-nucleus interactions is key to enabling precise determination of the parameters of interest. The physics underpinning the interactions of neutrinos on heavier elements is extremely complex, requiring an accurate description of the initial nuclear state, neutrino-nucleon interactions, and the propagation of particles through the dense nuclear medium.

T2K is a neutrino oscillation experiment with more than a decade’s worth of neutrino interaction data with a peak neutrino energy of 0.6 GeV/c. Over this time, T2K’s ND280 near detector — a magnetised tracker with hydrocarbon and water targets — has been measuring and characterising neutrino interactions with granular tracking. This allows precise study of the common neutrino interactions, and also enables constraints on less-understood kinematic regions and processes. This talk details the evolution of methods and analysis strategies used in T2K’s cross-section analyses — past, present, and future — and how these data can be best used both to challenge current theory, and to motivate new model development.

Keywords: neutrino; nucleus; cross; section; T2K