ATLAS reports an 8+ sigma excess in ttbar production near threshold, consistent with NRQCD quasi-bound states and measuring 9.3 pb.
Hayrapetyanet al.(CMS), Rept
17 Pith papers cite this work, alongside 2 external citations. Polarity classification is still indexing.
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A factorization framework and two-qubit description allow photon pairs at lepton colliders to be treated as qubits for measuring Bell inequality violation, quantum discord, and nonstabilizerness using Belle data.
Higgs scattering in SMEFT is analyzed with von Neumann entropy, linear entropy, and concurrence as momentum-isospin entanglement measures, determined by Wilson coefficients of dimension-6 and dimension-8 operators, revealing energy growth, interference cancellations, suppression conditions, and link
Analysis of ~10 billion muon decays from Fermilab g-2 data shows 5.5σ Leggett-Garg inequality violation via reconstructed temporal polarization correlators.
A model of quantum decoherence from string breaking explains hyperon spin correlations by linking vacuum entanglement to observed data in non-perturbative QCD.
Spin-flavor entanglement in Lambda_b to Lambda D decays supplies a method to extract the CKM weak phase gamma with uncertainty scaling as 1 over the Wootters concurrence.
Calculates decoherence from radiation on a Bell-state fermion pair by mapping integrated Altarelli-Parisi splitting functions to Kraus operators of an open quantum system.
Proposal to measure diphoton entanglement at pp colliders via Bethe-Heitler conversion in the tracker, yielding simulated significances of 0.007σ for Higgs→γγ and 1.5σ for continuum q q̄→γγ at HL-LHC.
Scalar Lambda-pair spin correlations leave a continuous density-matrix degeneracy; full tensor tomography is required to claim entanglement, and a ³P₀ benchmark predicts a specific anisotropy pattern.
Derives quantum Fisher information for simultaneous estimation of velocity and angle in gluon-fusion top-antitop production and connects estimation sensitivity to spin entanglement.
Toponium strengthens the spin-singlet component in top-quark pairs, substantially enhancing entanglement and enabling observable quantum steering at 10 sigma and Bell nonlocality at 9 sigma near threshold with current LHC data.
Phenomenological calculation of entanglement entropies in B0 → VV decays shows strong dependence on relative phases and a correlation with branching fractions that the authors link to weak and strong interaction dynamics.
NLO QCD corrections enhance the γγ → ttbar cross section while leaving spin observables largely unchanged, with entanglement peaking near threshold and both entanglement and Bell nonlocality depending strongly on beam polarization.
SVD-based numerical method reconstructs the two-fold ambiguous tau momenta in pi nu decays and shows entanglement observables remain extractable despite unresolved solutions.
The linearly polarized gluon distribution enhances entanglement of heavy quark pairs in electron-nucleus collisions when total and relative transverse momenta are orthogonal.
A one-operator-at-a-time sensitivity analysis identifies the collider observables providing the strongest individual constraints on top-quark SMEFT operators from current and projected data.
Mixing angle between toponium and elementary field Ψ is constrained to |θ| ≤ 13° (minimal model) or |θ| ≤ 1° (2HDM Type II/Y) to fit CMS ttbar excess under MPP.
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Observation of a cross-section enhancement near the $t\bar{t}$ production threshold in $\sqrt{s}=13$ TeV $pp$ collisions with the ATLAS detector
ATLAS reports an 8+ sigma excess in ttbar production near threshold, consistent with NRQCD quasi-bound states and measuring 9.3 pb.
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Quantum Information of Photon Pairs at Lepton Colliders
A factorization framework and two-qubit description allow photon pairs at lepton colliders to be treated as qubits for measuring Bell inequality violation, quantum discord, and nonstabilizerness using Belle data.
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Higgs Scattering and Entanglement in SMEFT
Higgs scattering in SMEFT is analyzed with von Neumann entropy, linear entropy, and concurrence as momentum-isospin entanglement measures, determined by Wilson coefficients of dimension-6 and dimension-8 operators, revealing energy growth, interference cancellations, suppression conditions, and link
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Leggett-Garg Inequality Violation in Muon $g-2$ Experiments
Analysis of ~10 billion muon decays from Fermilab g-2 data shows 5.5σ Leggett-Garg inequality violation via reconstructed temporal polarization correlators.
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Quantum decoherence of hyperon spin correlations in QCD hadronization
A model of quantum decoherence from string breaking explains hyperon spin correlations by linking vacuum entanglement to observed data in non-perturbative QCD.
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Spin-flavor entanglement in $\Lambda_b \to \Lambda D$ and weak phase extraction
Spin-flavor entanglement in Lambda_b to Lambda D decays supplies a method to extract the CKM weak phase gamma with uncertainty scaling as 1 over the Wootters concurrence.
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Decoherence effects in entangled fermion pairs at colliders
Calculates decoherence from radiation on a Bell-state fermion pair by mapping integrated Altarelli-Parisi splitting functions to Kraus operators of an open quantum system.
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Quantum entanglement of photon pairs at proton-proton colliders
Proposal to measure diphoton entanglement at pp colliders via Bethe-Heitler conversion in the tracker, yielding simulated significances of 0.007σ for Higgs→γγ and 1.5σ for continuum q q̄→γγ at HL-LHC.
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Hyperon-pair spin tomography beyond scalar spin correlations
Scalar Lambda-pair spin correlations leave a continuous density-matrix degeneracy; full tensor tomography is required to claim entanglement, and a ³P₀ benchmark predicts a specific anisotropy pattern.
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Derives quantum Fisher information for simultaneous estimation of velocity and angle in gluon-fusion top-antitop production and connects estimation sensitivity to spin entanglement.
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Toponium effects on quantum steering and Bell nonlocality of top quarks
Toponium strengthens the spin-singlet component in top-quark pairs, substantially enhancing entanglement and enabling observable quantum steering at 10 sigma and Bell nonlocality at 9 sigma near threshold with current LHC data.
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Quantum Correlations in the Decay of $B^0$ meson and Entanglement Entropy
Phenomenological calculation of entanglement entropies in B0 → VV decays shows strong dependence on relative phases and a correlation with branching fractions that the authors link to weak and strong interaction dynamics.
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Spin correlations and quantum entanglement in $\gamma\gamma \to t\bar t$ at polarized photon colliders with NLO QCD corrections
NLO QCD corrections enhance the γγ → ttbar cross section while leaving spin observables largely unchanged, with entanglement peaking near threshold and both entanglement and Bell nonlocality depending strongly on beam polarization.
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Revealing the Two-Fold Ambiguity: Tau Momentum Reconstruction and Its Impact on Entanglement Observables
SVD-based numerical method reconstructs the two-fold ambiguous tau momenta in pi nu decays and shows entanglement observables remain extractable despite unresolved solutions.
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Quantum entanglement in electron-nucleus collisions: Role of the linearly polarized gluon distribution
The linearly polarized gluon distribution enhances entanglement of heavy quark pairs in electron-nucleus collisions when total and relative transverse momenta are orthogonal.
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Sensitivity Analysis of the Top-Quark Sector
A one-operator-at-a-time sensitivity analysis identifies the collider observables providing the strongest individual constraints on top-quark SMEFT operators from current and projected data.
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Possible mixing between elementary and bound state fields in the $t\bar{t}$ production excess at the LHC
Mixing angle between toponium and elementary field Ψ is constrained to |θ| ≤ 13° (minimal model) or |θ| ≤ 1° (2HDM Type II/Y) to fit CMS ttbar excess under MPP.