Energetic radiation induces decoherence that significantly reduces entanglement in fermion pairs at colliders, with statistically significant signals observable in ttbar(g) at the LHC and tau pairs at Belle II.
Abramowiczet al.(Linear Collider Vision), (2025), 10.1140/epjs/s11734-026-02153-w, arXiv:2503.19983 [hep-ex]
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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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Radiation effects on the entanglement of fermion pairs at colliders
Energetic radiation induces decoherence that significantly reduces entanglement in fermion pairs at colliders, with statistically significant signals observable in ttbar(g) at the LHC and tau pairs at Belle II.
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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.