Constraining new physics in entangled two-qubit systems: top-quark, tau-lepton and photon pairs Marco Fabbrichesi, Roberto Floreanini and Emidio Gabrielli Eur. Phys. J. C, 83 2 (2023) 162 Published online: 19 February 2023 DOI: 10.1140/epjc/s10052-023-11307-2