Göttingen 2025 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 72: Detectors VII (Calorimeters)
T 72.4: Vortrag
Donnerstag, 3. April 2025, 17:00–17:15, VG 1.102
Kinematic reconstruction of deep-inelastic tau-neutrino interactions with SND@SHiP — Vasilisa Guliaeva1, Heiko Lacker2, and •Eduard Ursov2 — 1Constructor University, Bremen, Germany — 2Humboldt University of Berlin, Berlin, Germany
SHiP (Search for Hidden Particles) is a general-purpose fixed-target experiment under development at CERN's SPS, aimed at exploring feebly interacting GeV-scale particles (FIPs), appearing in various extensions of the Standard Model and advancing neutrino physics studies. The experiment will feature two primary subdetectors: the Scattering and Neutrino Detector (SND@SHiP), designed to study neutrino signals and search for direct detection of FIPs, and the Hidden Sector Decay Search (HSDS) detector, dedicated to registering decay products of FIPs. This work focuses on the integration of SND into the SHiP experiment, addressing the search for the detector's optimal location and design optimization to maximize its physics potential. The SND will employ a sandwich-like structure composed of active scintillating fiber layers interleaved with magnetized iron as the passive material. To evaluate the detector's capability to identify tau-neutrino signals against a background of muon neutrino events, machine learning classifiers based on Boosted Decision Trees (BDT) and Graph Neural Networks (GNN) have been developed. The results of the classification will guide adjustments to the detector dimensions to maximize tau-neutrino signal and to improve the reconstruction of the neutrino properties.
Keywords: Neutrino physics; Hadronic calorimeter; Fixed-target experiment