Karlsruhe 2024 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 7: Neutrino physics 1

T 7.3: Vortrag

Montag, 4. März 2024, 16:30–16:45, Geb. 30.21: Gerthsen-HS

Neutrino directionality with the reaction of inverse beta decay in Double Chooz — •Yaroslav Nikitenko, Philipp Soldin, Achim Stahl, and Christopher Wiebusch — III. Physikalisches Institut B, RWTH Aachen University

Reconstructing the direction of neutrinos is important for observations of supernovae and geoneutrinos. In liquid scintillator detectors the reaction of inverse beta decay is the main channel for detecting neutrinos from those sources. While the experimental spatial resolution does not allow reconstructing antineutrino direction for a single event, a large sample of prompt (positrons) and delayed (neutrons) events makes that possible on a statistical basis.

The Double Chooz reactor neutrino experiment allows studying neutrino directionality with the reaction of inverse beta decay. Its advantage is the neutrino source of a known direction and almost point-like structure, as well as good spatial resolution compared to other reactor experiments. We present the latest experimental results from Double Chooz, which for the first time in the world is measuring neutrino directionality using total neutron capture on both Gd and H nuclei in the detector.

Keywords: directionality; IBD; Double Chooz; total neutron capture