{"total":16,"items":[{"citing_arxiv_id":"2606.30768","ref_index":9,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Toponium effects on quantum steering and Bell nonlocality of top quarks","primary_cat":"hep-ph","submitted_at":"2026-06-29T18:02:44+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":5.0,"formal_verification":"none","one_line_summary":"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.","context_count":0,"top_context_role":null,"top_context_polarity":null,"context_text":null},{"citing_arxiv_id":"2606.30759","ref_index":10,"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":"2605.26724","ref_index":24,"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":7,"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":43,"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":"Shi,CP and CPT violating parameters determined from the joint decays ofC= +1entangled neutral pseudoscalar mesons,Physical Review D89(2014) 016018. [41] Y. Shi and J.-C. Yang,Time reversal symmetry violation in entangled pseudoscalar neutral charmed mesons,Physical Review D98(2018) 075019. [42] Y. Shi and J.-C. Yang,Particle physics violating crypto-nonlocal realism,European Physical Journal C80(2020) 861. [43] Y. Shi and J.-C. Yang,Entangled baryons: violation of inequalities based on local realism assuming dependence of decays on hidden variables,European Physical Journal C80(2020) 116. [44] Y. Shi,Entanglement in relativistic quantum field theory,Physical Review D70(2004) 105001. [45] Y. Afik, Y. Kats, J. R. M. de Nova, A. Soffer and D. Uzan,Entanglement and Bell"},{"citing_arxiv_id":"2604.16268","ref_index":9,"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":"907 (2021), arXiv:2003.02280 [quant-ph]. [6] G. Aadet al.(ATLAS), Nature633, 542 (2024), arXiv:2311.07288 [hep-ex]. [7] In this paper, we work within quantum mechanics, hence the arguments of Refs. [? ?] do not apply to our interpretation. [8] C. Severi, C. D. E. Boschi, F. Maltoni, and M. Sioli, Eur. Phys. J. C82, 285 (2022), arXiv:2110.10112 [hep-ph]. [9] Y. Afik and J. R. M. de Nova, Quantum6, 820 (2022), arXiv:2203.05582 [quant-ph]. [10] R. Aoude, E. Madge, F. Maltoni, and L. Mantani, Phys. Rev. D106, 055007 (2022), arXiv:2203.05619 [hep-ph]. [11] J. A. Aguilar-Saavedra and J. A. Casas, Eur. Phys. J. C 82, 666 (2022), arXiv:2205.00542 [hep-ph]. [12] M. Fabbrichesi, R. Floreanini, and E. Gabrielli, Eur."},{"citing_arxiv_id":"2604.16218","ref_index":55,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Quantum Tomography and Entanglement in Semi-Leptonic $h\\to VV^*$ Decays at Higher Orders","primary_cat":"hep-ph","submitted_at":"2026-04-17T16:28:40+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":5.0,"formal_verification":"none","one_line_summary":"Semi-leptonic h to VV* decays retain an effective two-qutrit description for quantum tomography and entanglement after including finite fermion masses and NLO corrections.","context_count":1,"top_context_role":"background","top_context_polarity":"background","context_text":"Ding, and Q. Li, \"Searching Quantum Entanglement inp p→Z Z process,\"arXiv:2506.16077 [hep-ph]. [53] J. Gu, S.-J. Lin, D. Y. Shao, L.-T. Wang, and S.-X. Yang, \"Decoherence in high energy collisions as renormalization group flow,\"arXiv:2510.13951 [hep-ph]. [54]CMSCollaboration, \"Study of spin correlations in Higgs boson decays to four leptons at CMS,\". [55] J. A. Aguilar-Saavedra, \"Momentum entanglement at colliders: theH→W W, ZZcase,\" arXiv:2512.02104 [hep-ph]. [56] G. Pelliccioli and E. Re, \"SMEFT effects on spin correlations and entanglement at NLO QCD in di-boson production at hadron colliders,\"arXiv:2601.09540 [hep-ph]. [57] E. Gabrielli and L. Marzola, \"Quantum entanglement and bell nonlocality at future lepton"},{"citing_arxiv_id":"2604.11887","ref_index":8,"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":"Then, the spin correlation matrix from unpolarized scattering, ordered in the helicity basis {ˆr,ˆn,ˆk}, is [14] C(un) =   2 sin2 θ 2−β2 sin2 θ − β2 sin2 θ 2−β2 sin2 θ 0− 2 sinθcosθ √ 1−β2 2−β2 sin2 θ 0− β2 sin2 θ 2−β2 sin2 θ 0 − 2 sinθcosθ √ 1−β2 2−β2 sin2 θ 0 2 cos2 θ 2−β2 sin2 θ + β2 sin2 θ 2−β2 sin2 θ   .(3.4) - 7 - The entanglement off ¯fproduced from similar unpolarized scattering processes is well studied [8, 14, 44]. It is commonly known that maximal entanglement only occurs in the highp T limit (β→1 andθ→π/2), where the spin correlation matrixC (un) → diag(1,−1,1), and the state becomes close to the Bell state|Ψ⟩ ˆn. When both thee + ande − beams are transversely polarized along thexdirection, the density operator of thee ± beam can be written as ˆρe±"},{"citing_arxiv_id":"2604.11697","ref_index":7,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Quantum entanglement in electron-nucleus collisions: Role of the linearly polarized gluon distribution","primary_cat":"hep-ph","submitted_at":"2026-04-13T16:33:54+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":4.0,"formal_verification":"none","one_line_summary":"The linearly polarized gluon distribution enhances entanglement of heavy quark pairs in electron-nucleus collisions when total and relative transverse momenta are orthogonal.","context_count":1,"top_context_role":"background","top_context_polarity":"background","context_text":"From this perspective, the investigation ofq¯qspin-correlations in a CGC framework paves the way for a novel research direction uniting the physics of dense gluonic matter with the quantum-informational characterization of spin entanglement 1. In a recent work, we analyzed spin-spin entanglement in exclusive diffractiveq¯qproduction, where the interaction proceeds via color-singlet exchange [7, 10]. At high-energy, where the color-singlet exchange is described in terms of the celebrated hard (BFKL) Pomeron of QCD [29-31], it was observed that theq¯qdiffractively produced always exhibits entanglement and Bell-nonlocality [7]. In the context of the collinear factorization 1 For previous works on different types of entanglement in the context of high-energy QCD, see [13-28]"},{"citing_arxiv_id":"2603.19389","ref_index":3,"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":"2601.11780","ref_index":117,"ref_count":4,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Observation of a cross-section enhancement near the $t\\bar{t}$ production threshold in $\\sqrt{s}=13$ TeV $pp$ collisions with the ATLAS detector","primary_cat":"hep-ex","submitted_at":"2026-01-16T21:05:04+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":8.0,"formal_verification":"none","one_line_summary":"ATLAS reports an 8+ sigma excess in ttbar production near threshold, consistent with NRQCD quasi-bound states and measuring 9.3 pb.","context_count":2,"top_context_role":"background","top_context_polarity":"background","context_text":"events using139fb −1 of ATLAS proton-proton collision data at√𝑠=13TeV, Eur. Phys. J. C83(2023) 728, arXiv:2301.06319 [hep-ex]. [116] ATLAS Collaboration,The performance of missing transverse momentum reconstruction and its significance with the ATLAS detector using140fb−1 of √𝑠=13TeV𝑝 𝑝collisions, Eur. Phys. J. C85(2025) 606, arXiv:2402.05858 [hep-ex]. [117] Y. Afik and J. R. M. de Nova,Quantum information with top quarks in QCD, Quantum6(2022) 820, arXiv:2203.05582 [quant-ph]. [118] J. A. Aguilar-Saavedra and J. A. Casas, Improved tests of entanglement and Bell inequalities with LHC tops, Eur. Phys. J. C82(2022) 666, arXiv:2205.00542 [hep-ph]. [119] B. A. Betchart, R. Demina and A. Harel, Analytic solutions for neutrino momenta in decay of top quarks,"},{"citing_arxiv_id":"2510.17730","ref_index":6,"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":"Index filter (list[int], optional): zero-based indices selecting which instances (within the ranked list) to include. Here0denotes the particle with the highest value of the chosen observable,1the next, etc. If omitted or empty, all matching particles are considered in the order given by the ranking. To skip any boost and keep the lab frame, set the first element to-1. The default is([-1], \"\", []). Examples: -boost_choice = ([6, -6], \"\", []): boost to thet ¯tpair rest frame using the sum of the top and antitop four-momenta; no disambiguation needed. -boost_choice = ([23], \"pt\", [0]): for multipleZbosons, pick the hardestZ(pt- ranked, index0) and boost to its rest frame. - 56 - -boost_choice = ([5, -5], \"E\", [0,1]): if severalband ¯bare present, select the two most energeticb-flavoured jets by energy and boost to the rest frame of their sum."},{"citing_arxiv_id":"2510.04200","ref_index":4,"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":56,"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":"11883]. [54] C. Severi, C. D. E. Boschi, F. Maltoni, and M. Sioli,Quantum tops at the LHC: from entanglement to Bell inequalities,Eur. Phys. J. C82(2022), no. 4 285, [arXiv:2110.10112]. [55] J. A. Aguilar-Saavedra and J. A. Casas,Improved tests of entanglement and Bell inequalities with LHC tops,Eur. Phys. J. C82(2022), no. 8 666, [arXiv:2205.00542]. [56] A. J. Larkoski,General analysis for observing quantum interference at colliders,Phys. Rev. D105 (2022), no. 9 096012, [arXiv:2201.03159]. [57] Y. Afik and J. R. M. n. de Nova,Quantum information with top quarks in QCD,Quantum6(2022) 820, [arXiv:2203.05582]. [58] T. Han, M. Low, and T. A. Wu,Quantum entanglement and Bell inequality violation in semi-leptonic"},{"citing_arxiv_id":"2504.07030","ref_index":6,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Decoherence effects in entangled fermion pairs at colliders","primary_cat":"quant-ph","submitted_at":"2025-04-09T16:44:25+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":7.0,"formal_verification":"none","one_line_summary":"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.","context_count":0,"top_context_role":null,"top_context_polarity":null,"context_text":null},{"citing_arxiv_id":"2504.01496","ref_index":4,"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}