{"total":13,"items":[{"citing_arxiv_id":"2606.30759","ref_index":9,"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":22,"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":"2605.12033","ref_index":44,"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":"cality-offer a hierarchical framework for characterizing quantum correlations in collider- produced systems. On the theoretical front, a substantial body of work has investigated quantum entan- glement (QE) and Bell nonlocality in high-energy processes. Among many others, one of us has studied QE in pseudoscalar mesons [35-43], and in relativistic quantum field the- ory [44]. In recent years, the fermionic two-qubit structure has been extensively explored in t¯tsystem at LHC [30, 45-59] ande−e+ colliders [46, 60-62]. Beyond foundational aspects, QI quantities in top-quark production have emerged as complementary probes of physics beyond the Standard Model (BSM) [51, 63]. New interactions can modify the production spin density matrix, thereby altering the structure of spin correlations and the associated"},{"citing_arxiv_id":"2604.16268","ref_index":8,"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":"Schlosshauer, Rev. Mod. Phys.76, 1267 (2004), arXiv:quant-ph/0312059. [5] Y. Afik and J. R. M. de Nova, Eur. Phys. J. Plus136, 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."},{"citing_arxiv_id":"2604.16218","ref_index":53,"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":"Navarro, \"Higher-order corrections to quantum observables in h→WW ∗,\"JHEP11(2025) 158,arXiv:2506.19951 [hep-ph]. [51] S. De, A. Dey, and T. Samui, \"Unfolding quantum entanglement fromh→ZZ∗ →jjℓℓat a muon collider,\"arXiv:2512.09121 [hep-ph]. [52] A. Ruzi, Y. Wu, R. 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."},{"citing_arxiv_id":"2604.11887","ref_index":7,"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":"02280]. [5] A.J. Barr, M. Fabbrichesi, R. Floreanini, E. Gabrielli and L. Marzola,Quantum entanglement and Bell inequality violation at colliders,Prog. Part. Nucl. Phys.139(2024) 104134 [2402.07972]. [6] M. Fabbrichesi, R. Floreanini and G. Panizzo,Testing Bell Inequalities at the LHC with Top-Quark Pairs,Phys. Rev. Lett.127(2021) 161801 [2102.11883]. [7] 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) 285 [2110.10112]. [8] Y. Afik and J.R.M.n. de Nova,Quantum information with top quarks in QCD,Quantum6 (2022) 820 [2203.05582]. [9] Y. Afik and J.R.M.n. de Nova,Quantum Discord and Steering in Top Quarks at the LHC,"},{"citing_arxiv_id":"2603.19389","ref_index":2,"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":"2510.17730","ref_index":3,"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":",Measurements of spin correlation in top-antitop quark events from proton-proton collisions at√s= 7TeV using the ATLAS detector,Phys. Rev. D 90(2014) 112016, [1407.4314]. [2]CMScollaboration, V. Khachatryan et al.,Measurement of Spin Correlations int¯tProduction using the Matrix Element Method in the Muon+Jets Final State inppCollisions at√s=8 TeV,Phys. Lett. B758(2016) 321-346, [1511.06170]. [3]ATLAScollaboration, M. Aaboud et al.,Measurements of top quark spin observables intt events using dilepton final states in√s= 8TeV pp collisions with the ATLAS detector,JHEP 03(2017) 113, [1612.07004]. [4]CMScollaboration, V. Khachatryan et al.,Measurements of t t-bar spin correlations and top quark polarization using dilepton final states in pp collisions at sqrt(s) = 8 TeV,Phys."},{"citing_arxiv_id":"2510.04200","ref_index":3,"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":53,"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":"systems [47-50], although only an indirect test of Bell non-locality could be probed in this last case. Interest in the high-energy phenomenology of entanglement has been recently renewed following the demonstration that spin correlations in top-quark pairs produced at the Large Hadron Collider (LHC) [51] at CERN can reveal entanglement [52], and that such systems may also exhibit violations of the Bell inequality [53]. This revival has led to a wave of studies, particularly focused on top- quark production [54-59], as well as investigations involving spin-1 mesons [60-62], hyperons [62, 63], tau-lepton pairs [64, 65], gauge bosons originating from Higgs decays [66-69], and vector boson scattering [70]. Together, these works highlight that both entanglement and violations of the Bell"},{"citing_arxiv_id":"2504.07030","ref_index":4,"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":3,"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},{"citing_arxiv_id":"2402.16956","ref_index":29,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Positivity in Amplitudes and Quantum Entanglement","primary_cat":"hep-th","submitted_at":"2024-02-26T19:00:15+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":6.0,"formal_verification":"none","one_line_summary":"Links amplitude positivity to S-matrix entanglement consistency for flavored states, analyzes disentanglers, and introduces wave-packet regularization for entanglement expressions.","context_count":0,"top_context_role":null,"top_context_polarity":null,"context_text":null}],"limit":50,"offset":0}