Quantum detection of new physics in top-quark pair production at the LHC

2024/01/16 by Fabio Maltoni, Maltoni, Fabio, Claudio Severi +5 · 24 citations
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Particle Detector Development and Performance #Particle physics theoretical and experimental studies

paper · pdf · doi:10.48550/arxiv.2401.08751

openalex publication_date 2024/01/16 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01

Abstract

The recent observation of entanglement between top and anti-top quarks at the LHC opens the way to interpreting collider data with quantum information tools. In this work we investigate the relevance of quantum observables in searches of new physics. To this aim, we study spin correlations of top/anti-top pairs originating from various intermediate resonances, and compare the discovery reach of quantum observables compared to classical ones. We find that they provide complementary information and, in several notable cases, also the additional leverage necessary to detect new effects.

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• Hadron Structure from the Hierarchy of Quantum Correlations in Deep-Inelastic Scattering
• Quantum Tomography of Top Quarks as a Probe of Charge-Parity Violation
• Analytic NNLO transverse-momentum-dependent soft function for heavy quark pair hadroproduction at threshold
• Higher-Order Corrections to Quantum Observables in h→ WW^*
• Toponium physics at the Large Hadron Collider
• Quantum Entanglement is Quantum: ZZ Production at the LHC
• Nonlocal Advantage of Quantum Coherence in Top Quarks
• Spin Correlations in t t Production and Decay at the LHC in QCD Perturbation Theory
• Universality of entanglement in gluon dynamics

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