2025/01/10 by Konstantin Sharko, Sharko, Konstantin
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions
paper · pdf · doi:10.48550/arxiv.2501.06070
openalex publication_date 2025/01/10 · openalex created_date 2025/01/14 · openalex updated_date 2026/07/28
The first simultaneous measurement of single and pair production of top quarks in association with a Z boson (tZq, tWZ and ttZ) is presented, including both inclusive and differential cross sections. A multiclass neural network is used to separate the signal and the backgrounds. Compared to previous studies, the simultaneous measurement is less dependent on the signal modeling assumptions and improves the sensitivity to new physics scenarios, as it enables to constrain possible deviations from the standard model across different processes.