Entanglement and Bell nonlocality with bottom-quark pairs at hadron colliders

Abstract

It has been shown that entanglement and Bell nonlocality, which are key concepts in Quantum Mechanics, can be probed in high-energy colliders via processes of fundamental particle scattering. In fact, the ATLAS and CMS collaborations have measured entanglement using top-quark pairs produced in proton-proton collisions at the LHC. Recently, it was shown that spin correlations can be measured in pairs of bottom quarks at the LHC, despite the fact that bottom quarks, unlike top quarks, hadronize before decaying. Here, we demonstrate that quantum correlations can also be studied using bottom-quark pairs, and analyze the feasibility of the observation of entanglement and Bell nonlocality in several collider experiments. Given the low mass of the bottom quark relative to typical energies accessible at the LHC, many of the bottom-quark pairs are in the ultrarelativistic regime, where they can exhibit strong spin entanglement. We find that entanglement of bottom-quark pairs may be measurable even with the LHC Run 2 data, especially with the CMS $B$ parking dataset, while observation of Bell nonlocality may become feasible at the high-luminosity phase of the LHC.

9 pages, 2 figures

References in corpus (43)

• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• An Introduction to PYTHIA 8.2
• Quantum Entanglement of Moving Bodies
• Parton Fragmentation Functions
• Demonstration of entanglement-by-measurement of solid state qubits
• Entanglement in neutrino oscillations
• Pattern of Global Spin Alignment of $\varphi$ and $K^{\ast 0}$ mesons in Heavy-Ion Collisions
• Quantum tops at the LHC: from entanglement to Bell inequalities
• Quantum information with top quarks in QCD
• Relativistic Quantum Teleportation with Superconducting Circuits
• Observation of quantum entanglement in top-quark pairs using the ATLAS detector
• Improved tests of entanglement and Bell inequalities with LHC tops
• Quantum discord and steering in top quarks at the LHC
• Testing entanglement and Bell inequalities in $H\to ZZ$
• Constraining new physics in entangled two-qubit systems: top-quark, tau-lepton and photon pairs
• Observation of quantum entanglement in top quark pair production in proton-proton collisions at $\sqrt{s}$ = 13 TeV
• Quantum state tomography, entanglement detection and Bell violation prospects in weak decays of massive particles
• Quantum information and CP measurement in $H\to {\tau }^{+}{\tau }^{-}$ at future lepton colliders
• Measurement of Bell-type inequalities and quantum entanglement from $\Lambda$-hyperon spin correlations at high energy colliders
• When the Machine Chimes the Bell: Entanglement and Bell Inequalities with Boosted $t\bar{t}$
• Measurement of global polarization of Λ hyperons in few-GeV heavy-ion collisions
• Real-time non-perturbative dynamics of jet production: quantum entanglement and vacuum modification
• Statistical hadronization of heavy flavor quarks in elementary collisions: successes and failures
• Laboratory-frame tests of quantum entanglement in $H\to WW$
• Entanglement and Bell inequalities violation in $H\to ZZ$ with anomalous coupling
• Bell-type inequalities for systems of relativistic vector bosons
• Measurements of polarization and spin correlation and observation of entanglement in top quark pairs using lepton+jets events from proton-proton collisions at $\sqrt{s}$ = 13 TeV
• First observation of the decay $B_s^0\to K^{-}{\mu }^{+}{\nu }_{\mu }$ and a measurement of $|V_{ub}|/|V_{cb}|$
• Wave packet approach to quantum correlations in neutrino oscillations
• Test of lepton flavor universality in B${}^{\pm }$ $\to$ K${}^{\pm }{\mu }^{+}{\mu }^{-}$ and B${}^{\pm }$ $\to$ K${}^{\pm }$e${}^{+}$e${}^{-}$ decays in proton-proton collisions at $\sqrt{s}$ = 13 TeV
• Isolating semi-leptonic $H\to W{W}^{\ast }$ decays for Bell inequality tests
• Optimizing Fictitious States for Bell Inequality Violation in Bipartite Qubit Systems
• QCD evolution of entanglement entropy
• Quantum tomography with $\tau$ leptons at the FCC-ee
• Enriching the physics program of the CMS experiment via data scouting and data parking
• Reconstruction of semileptonically decaying beauty hadrons produced in high energy pp collisions
• Enhanced production of ${\Lambda }_b^0$ baryons in high-multiplicity $pp$ collisions at $\sqrt{s}=13$ TeV
• Amplitude analysis of the ${\Lambda }_c^{+}\to p{K}^{-}{\pi }^{+}$ decay and ${\Lambda }_c^{+}$ baryon polarization measurement in semileptonic beauty hadron decays
• Neutrino reconstruction with topological information
• Search for long-lived heavy neutrinos in the decays of B mesons produced in proton-proton collisions at $\sqrt{s}$ = 13 TeV
• Relativistic spin operator must be intrinsic
• Prospects for measuring quark polarization and spin correlations in $b\bar{b}$ and $c\bar{c}$ samples at the LHC
• Quantum discord and entropic measures of two relativistic fermions

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• Gedanken Experiments of Entanglement in Particle Physics: Interactions, Operators and Bell Inequalities in Flavor Space
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