Entanglement in ttbar production at lepton colliders is typically reduced by scalar mediators but shows sizable deviations in U(1)B-L and Randall-Sundrum models, positioning quantum-information observables as probes for new neutral interactions.
Measurement of the top quark polarization and t t spin correlations using dilepton final states in proton-proton collisions at √s=13 TeV
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ATLAS and CMS report new measurements of spin correlations and entanglement in top-quark pairs from large LHC datasets at 13.6 TeV.
CMS reports fiducial and differential ttγ cross sections plus ttγ/tt ratios at 13 TeV that agree with Standard Model expectations within uncertainties.
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Disentangling new physics with quantum entanglement in $t\bar{t}$ production at future lepton colliders
Entanglement in ttbar production at lepton colliders is typically reduced by scalar mediators but shows sizable deviations in U(1)B-L and Randall-Sundrum models, positioning quantum-information observables as probes for new neutral interactions.
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Measurement of spin correlation and entanglement in ATLAS and CMS
ATLAS and CMS report new measurements of spin correlations and entanglement in top-quark pairs from large LHC datasets at 13.6 TeV.
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Inclusive and differential measurements of the $\mathrm{t\bar{t}}\gamma$ cross section and the $\mathrm{t\bar{t}}\gamma$ / $\mathrm{t\bar{t}}$ cross section ratio in proton-proton collisions at $\sqrt{s}$ = 13 TeV
CMS reports fiducial and differential ttγ cross sections plus ttγ/tt ratios at 13 TeV that agree with Standard Model expectations within uncertainties.