9th ComHEP: Colombian Meeting on High Energy Physics

Quantum tomography and entanglement of top quarks at the LHC with the CMS experiment.

5 Dec 2024, 10:00

25m

Paraninfo (Sede centro Universidad de Nariño)

20 minutes talk LHC and Neutrino experiments

Speaker

Juan Duarte (Purdue University (US))

Description

Quantum entanglement is one of the most famous and strange phenomena observed in quantum systems. Going against classical intuition, entanglement and other correlation have been studied widely by researchers mainly in low-energy systems (eV - MeV). The Large Hadron Collider (LHC) provides a unique environment to test these quantum properties at the highest energy scales ever. This can be done through the top quark-antiquark $(\mathrm{t}\overline{\mathrm{t}})$ system produced at the LHC, since thanks to the top's large decay width, its spin information gets transferred to the angular distributions of its decay products. In this work, we present some general aspects of quantum tomography in the $\mathrm{t}\overline{\mathrm{t}}$ system (Phys. Rev. D 100, 072002) and recent results probing quantum entanglement between the top quarks (arXiv:2406.03976) using data recorded by the Compact Muon Solenoid (CMS) detector during the LHC Run II.

Presentation materials

QuantumTomographyTopQuarks_COMHEP.pdf