Nuclear Seminar - Stanislav Tokár (21.5.2025)

Wednesday 21.5.2025 at 14:00, Lecture room F1/364

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prof. RNDr. Stanislav Tokár, DrSc.:
Quantum entanglement in top-quark pair production

Abstract:
Quantum entanglement is one of the most fundamental features of quantum mechanics. It has been observed in various systems, including photons, mesons, atoms, and others. Recently, high-energy colliders have also emerged as promising platforms for experimentally investigating foundational aspects of quantum mechanics. This presentation explores the phenomenon of quantum entanglement in quark systems, focusing on the detection of entanglement between the spins of top–antitop quark pairs at the Large Hadron Collider (LHC). For the first time, entanglement is studied in a pair of quarks at the highest energy scale achieved to date. The presentation highlights the results of spin correlation and quantum entanglement measurements in top-quark pair production, carried out by the ATLAS and CMS experiments at proton collisions of centre-of-mass energies ranging from 7 to 13 TeV.

 

 

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