High-energy colliders enable the testing of quantum mechanics at its most fundamental level, in the presence of strong and electroweak interactions, with systems that consist of qubits (fermions) and qutrits (massive spin-1 bosons). Quantum state tomography at colliders enables the witnessing of entanglement and Bell non-locality, two defining characteristics of quantum mechanics. We offer a comprehensive explanation of the underlying principles and the methods employed to achieve this remarkable feat.
@article{arxiv.2503.18535,
title = {About testing Bell locality at colliders},
author = {M. Fabbrichesi and R. Floreanini and L. Marzola},
journal= {arXiv preprint arXiv:2503.18535},
year = {2025}
}