{"total":14,"items":[{"citing_arxiv_id":"2606.30759","ref_index":20,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Quantum Information of Photon Pairs at Lepton Colliders","primary_cat":"hep-ph","submitted_at":"2026-06-29T18:01:03+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":7.0,"formal_verification":"none","one_line_summary":"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.","context_count":0,"top_context_role":null,"top_context_polarity":null,"context_text":null},{"citing_arxiv_id":"2606.28034","ref_index":22,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Quantum Correlations in the Decay of $B^0$ meson and Entanglement Entropy","primary_cat":"hep-ph","submitted_at":"2026-06-26T12:42:11+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":4.0,"formal_verification":"none","one_line_summary":"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.","context_count":0,"top_context_role":null,"top_context_polarity":null,"context_text":null},{"citing_arxiv_id":"2606.11296","ref_index":41,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Tripartite Entanglement in $e^+ e^- \\to t \\bar{t} Z$","primary_cat":"hep-ph","submitted_at":"2026-06-09T18:00:01+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":6.0,"formal_verification":"none","one_line_summary":"Computes entanglement negativities for the tripartite spin system in e+e- -> ttZ and projects that collective entanglement is accessible but genuine multipartite entanglement has limited sensitivity at a polarized ILC with expected luminosity.","context_count":0,"top_context_role":null,"top_context_polarity":null,"context_text":null},{"citing_arxiv_id":"2605.26724","ref_index":50,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Revealing the Two-Fold Ambiguity: Tau Momentum Reconstruction and Its Impact on Entanglement Observables","primary_cat":"hep-ph","submitted_at":"2026-05-26T09:04:49+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":4.0,"formal_verification":"none","one_line_summary":"SVD-based numerical method reconstructs the two-fold ambiguous tau momenta in pi nu decays and shows entanglement observables remain extractable despite unresolved solutions.","context_count":0,"top_context_role":null,"top_context_polarity":null,"context_text":null},{"citing_arxiv_id":"2605.19642","ref_index":13,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Controlling Quantum discord and steering in Electron-Positron Annihilation Using Polarized Beams","primary_cat":"hep-ph","submitted_at":"2026-05-19T10:25:15+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":5.0,"formal_verification":"none","one_line_summary":"Polarized lepton beams control quantum discord and steering in hyperon-antihyperon pairs from e+e- annihilation, with discord persisting in separable states via transverse polarization.","context_count":0,"top_context_role":null,"top_context_polarity":null,"context_text":null},{"citing_arxiv_id":"2605.12033","ref_index":47,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Quantumness of top quark pairs produced at LHC within SMEFT framework","primary_cat":"hep-ph","submitted_at":"2026-05-12T12:15:33+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":6.0,"formal_verification":"none","one_line_summary":"Quantum information observables in LHC top quark pair production are modified by SMEFT dimension-6 operators in ways that depend on their CP properties, offering a complementary probe beyond standard observables.","context_count":1,"top_context_role":"background","top_context_polarity":"background","context_text":"averaged mixture of sub-states rather than a true quantum state. Such states are referred to as an \"fictitious state\" [52, 56, 59] and the measurement or observation of quantumness on such a system may not directly correspond to quantumness in a genuine quantum state. For this reason, defining a uniform quantization axis across events is crucial for spin-related studies [47]. In thet¯tcenter-of-mass frame, an orthonormal basis{ˆk,ˆr,ˆn}is defined [7]. The helicity axis ˆkis aligned along the top quark's direction of motion,ˆpdenotes the direction of the incoming parton, andΘis the top-quark scattering angle. The component of the beam direction that is orthogonal toˆkis ˆr= ˆp−ˆkcos Θ sin Θ ,(2.8) - 4 - while the remaining axis in the production plane is"},{"citing_arxiv_id":"2604.16268","ref_index":57,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Radiation effects on the entanglement of fermion pairs at colliders","primary_cat":"hep-ph","submitted_at":"2026-04-17T17:26:05+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":6.0,"formal_verification":"none","one_line_summary":"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.","context_count":1,"top_context_role":"background","top_context_polarity":"background","context_text":"more than doubled and both experiments will collect sev- eral million events per experiment in the high-luminosity program of the LHC, boosting the sensitivity still further. τ-lepton production at Belle II and the Z-pole. High-luminosity electron-positron colliders operated as aB-hadron orZ-boson factories are expected to pro- duce samples of 10 8 to 10 11 τ +τ − pairs in entangled states [57, 58]. The prospects of the Belle II experi- ment and the experiments in Giga-Z and Tera-Z runs of linear and circular electron-positron collider projects [40, 55, 56] are assessed here. 5 Machine √s [GeV] R Ldt \u0002 ab−1\u0003 τ+τ − τ+τ −γ R= Cτ+ τ − γ Cτ+ τ − S= R−1 σR # events C[ρ] Cut # events C[ρ] Belle II 10.58 2025 0.5/ Target 50 2025 5·10 8 / Target"},{"citing_arxiv_id":"2604.11887","ref_index":18,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Spin Correlation and Quantum Entanglement of Fermion Pairs in Transversely Polarized $e^-e^+$ Collisions","primary_cat":"hep-ph","submitted_at":"2026-04-13T18:00:03+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":5.0,"formal_verification":"none","one_line_summary":"Transverse polarization in e+e- collisions generates maximally entangled fermion pairs in QED processes and boosts entanglement in electroweak and Bhabha scattering.","context_count":1,"top_context_role":"background","top_context_polarity":"background","context_text":"Su,Measuring quantum discord at the LHC,JHEP05 (2025) 081 [2412.21158]. [16] Y. Afik, R. Demina, A. Herrera, O. Heinz Hindrichs, J.R.M. de Nova and B. Ravina, Experimental characterization of the hierarchy of quantum correlations in top quark pairs, 2602.15115. [17]ATLAScollaboration,Observation of quantum entanglement with top quarks at the ATLAS detector,Nature633(2024) 542 [2311.07288]. [18]CMScollaboration,Observation of quantum entanglement in top quark pair production in proton-proton collisions at √s= 13TeV,Rept. Prog. Phys.87(2024) 117801 [2406.03976]. - 30 - [19] M.M. Altakach, P. Lamba, F. Maltoni, K. Mawatari and K. Sakurai,Quantum information and CP measurement in H→τ+τ- at future lepton colliders,Phys. Rev. D107(2023) 093002"},{"citing_arxiv_id":"2603.19389","ref_index":42,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Understanding Bell locality tests at colliders","primary_cat":"hep-ph","submitted_at":"2026-03-19T18:26:18+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":4.0,"formal_verification":"none","one_line_summary":"Under mild assumptions, local hidden variable theories become testable at colliders and can be disproved via Bell-like inequalities for muon and tau pairs.","context_count":0,"top_context_role":null,"top_context_polarity":null,"context_text":null},{"citing_arxiv_id":"2512.22837","ref_index":23,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Bell nonlocality and entanglement in $\\chi_{cJ}$ decays into baryon pair","primary_cat":"hep-ph","submitted_at":"2025-12-28T08:40:25+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":7.0,"formal_verification":"none","one_line_summary":"Chi_c0 decays exhibit maximal Bell violation and entanglement, chi_c1 shows angle-modulated violation, and chi_c2 baryon pairs are separable with no violation.","context_count":0,"top_context_role":null,"top_context_polarity":null,"context_text":null},{"citing_arxiv_id":"2510.17730","ref_index":25,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Automated computation of spin-density matrices and quantum observables for collider physics","primary_cat":"hep-ph","submitted_at":"2025-10-20T16:44:34+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":7.0,"formal_verification":"none","one_line_summary":"An automated framework in MadGraph5_aMC@NLO computes tree-level production spin-density matrices and quantum observables for generic collider processes, with validation on ttbar and VV and new applications to multi-top final states.","context_count":1,"top_context_role":"background","top_context_polarity":"background","context_text":"Aguilar-Saavedra,Decay of entangled fermion pairs with post-selection,Phys. Lett. B 848(2024) 138409, [2308.07412]. [23] J. A. Aguilar-Saavedra and J. A. Casas,Entanglement Autodistillation from Particle Decays, Phys. Rev. Lett.133(2024) 111801, [2401.06854]. [24] K. Cheng, T. Han and M. Low,Quantum Tomography at Colliders: With or Without Decays, 2410.08303. [25] J. A. Aguilar-Saavedra,Full quantum tomography of top quark decays,Phys. Lett. B855 (2024) 138849, [2402.14725]. [26] T. Han, M. Low, N. McGinnis and S. Su,Measuring quantum discord at the LHC,JHEP05 (2025) 081, [2412.21158]. [27] F. Maltoni, C. Severi, S. Tentori and E. Vryonidou,Quantum detection of new physics in top-quark pair production at the LHC,JHEP03(2024) 099, [2401."},{"citing_arxiv_id":"2510.04200","ref_index":19,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Qubit entanglement from forward scattering","primary_cat":"hep-ph","submitted_at":"2025-10-05T13:34:56+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":6.0,"formal_verification":"none","one_line_summary":"In perturbative relativistic 2→2 scattering the concurrence of the traced-out qubit density matrix depends at leading order on the real part of the inelastic forward amplitude.","context_count":0,"top_context_role":null,"top_context_polarity":null,"context_text":null},{"citing_arxiv_id":"2509.07585","ref_index":63,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Particle Collisions & Quantum Entanglement in High-Energy Collisions","primary_cat":"hep-ph","submitted_at":"2025-09-09T10:52:36+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":2.0,"formal_verification":"none","one_line_summary":"A review summarizing advancements in probing quantum entanglement and Bell inequalities using high-energy particle colliders.","context_count":1,"top_context_role":"background","top_context_polarity":"background","context_text":"D109(2024), no. 3 L031104, [arXiv:2305.04982]. [61] E. Gabrielli and L. Marzola,Entanglement and Bell Inequality Violation in B→ϕϕDecays,Symmetry 16(2024), no. 8 1036, [arXiv:2408.05010]. [62] M. Fabbrichesi, R. Floreanini, E. Gabrielli, and L. Marzola,Bell inequality is violated in charmonium decays,Phys. Rev. D110(2024), no. 5 053008, [arXiv:2406.17772]. [63] W. Gong, G. Parida, Z. Tu, and R. Venugopalan,Measurement of Bell-type inequalities and quantum entanglement fromΛ-hyperon spin correlations at high energy colliders,Phys. Rev. D106(2022), no. 3 L031501, [arXiv:2107.13007]. [64] K. Ehat¨ aht, M. Fabbrichesi, L. Marzola, and C. Veelken,Probing entanglement and testing Bell inequality violation withe +e− →τ +τ − at Belle II,Phys."},{"citing_arxiv_id":"2504.01496","ref_index":49,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Entanglement and Bell Nonlocality in $\\tau^+ \\tau^-$ at the LHC using Machine Learning for Neutrino Reconstruction","primary_cat":"hep-ph","submitted_at":"2025-04-02T08:48:10+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":5.0,"formal_verification":"none","one_line_summary":"Simulations of pp to tau+ tau- at the LHC with ML neutrino reconstruction show Bell nonlocality above 5 sigma, proposing tau pairs as a new benchmark system for quantum information studies.","context_count":0,"top_context_role":null,"top_context_polarity":null,"context_text":null}],"limit":50,"offset":0}