{"total":16,"items":[{"citing_arxiv_id":"2604.16268","ref_index":46,"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":"method","top_context_polarity":"use_method","context_text":"matics is performed before evaluating the concurrence. Figure 2 presents the concurrence as a function of the energy of the FSR gluon. Two independent pre- dictions are shown: an automated calculation based on the tools developed in Ref. [44] (black markers), and a tomographic reconstruction from top-quark decay prod- ucts in a Monte Carlo sample generated withMad- Graph5 aMC@NLO[45] andMadSpin[46] (blue his- togram). A more detailed comparison, including an ana- lytical calculation, is provided in the Supplemental Ma- terial. The concurrence depends strongly on the gluon energy, as shown in Fig. 2. When the gluon is soft its impact 3 0 20 40 60 80 100 120 140 Eg [GeV] 0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35Concurrence C[ ] KINEMATICALLY EXCLUDED"},{"citing_arxiv_id":"2604.09485","ref_index":35,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Threshold Top-Quark Pair-Production: Cross Sections and Key Uncertainties","primary_cat":"hep-ph","submitted_at":"2026-04-10T16:51:37+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":3.0,"formal_verification":"none","one_line_summary":"Near-threshold top-quark pair production cross section at 13 TeV LHC is 11.67 pb with +1.43/-1.47 pb uncertainty, including NRQCD Green's function effects and comparison to POWHEG-BOX.","context_count":1,"top_context_role":"background","top_context_polarity":"background","context_text":"Mattelaer et al.,The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations,JHEP07(2014) 079 [1405.0301]. 22 [34] A. Denner, S. Dittmaier, S. Kallweit and S. Pozzorini,NLO QCD corrections to WWbb production at hadron colliders,Phys. Rev. Lett.106(2011) 052001 [1012.3975]. [35] G. Bevilacqua, M. Czakon, A. van Hameren, C.G. Papadopoulos and M. Worek,Complete off-shell effects in top quark pair hadroproduction with leptonic decay at next-to-leading order,JHEP02 (2011) 083 [1012.4230]. [36] A. Denner, S. Dittmaier, S. Kallweit and S. Pozzorini,NLO QCD corrections to off-shell top-antitop production with leptonic decays at hadron colliders,JHEP10(2012) 110 [1207."},{"citing_arxiv_id":"2604.05924","ref_index":69,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Doubly charged Higgs production within the Higgs triplet model at future electron-positron colliders","primary_cat":"hep-ph","submitted_at":"2026-04-07T14:26:56+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":3.0,"formal_verification":"none","one_line_summary":"CLIC offers superior discovery potential for doubly charged Higgs bosons in the Higgs triplet model compared to HL-LHC, reaching masses up to 1.2 TeV in gauge-like scenarios and high significance in Yukawa-like regions via same-sign lepton decays.","context_count":1,"top_context_role":"method","top_context_polarity":"use_method","context_text":"The beam-induced backgrounds (e.g., γγ→hadrons) are simulated by applying additional energy smearing to the reconstructed jets. For the background analysis, the following baseline selection criteria are defined for the final-state objects: pT,ℓ >10 GeV, p T,γ >10 GeV, p T,j >20 GeV, |ηℓ|<2.5,|η γ|<2.5,|η j|<5.0. (26) The event selection is implemented inMadAnalysis5[69]. As illustrated in Fig.1,H ±± de- cays predominantly into same-sign lepton pairs in the Yukawa-like region, and into same-sign W-boson pairs in the gauge-like region. In the background analysis, we adopt the follow- ing convention: if a scattering process involves an intermediate state, only the resonance 16 associated with that state is considered; otherwise, it represents the residual non-resonant"},{"citing_arxiv_id":"2604.05041","ref_index":91,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Aspects of a Five-Dimensional $U(1)_{L_\\mu - L_\\tau}$ Model at Future Muon-Based Colliders","primary_cat":"hep-ph","submitted_at":"2026-04-06T18:00:08+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":5.0,"formal_verification":"none","one_line_summary":"Future muon colliders can probe Kaluza-Klein excitations of a 5D U(1)_{Lμ-Lτ} gauge boson across MeV to TeV masses with couplings down to 10^{-5}.","context_count":1,"top_context_role":"background","top_context_polarity":"background","context_text":"2While NA64µcan directly constrain the gauge couplingg D of theU(1) Lµ−Lτ gauge group without invoking any kinetic mixing, in the presence of a non-vanishing gauge kinetic mixing with the hypercharge gauge boson, constraints from NA64e[53] can also be effective. In Ref. [79], the low-energy constraints from elastic neutrino- electron scattering (EνES), including BOREXINO [89], TEXONO [90], CHARM-II [91, 92] and projected DUNE Near Detector sensitivities [93, 94], were studied for this model, considering both flat and warped extra dimensions. 3 complementary probes of the model at a 2 TeVµTRISTAN collider. In Section 5, we focus on the resonant production of the KK gauge bosons (V(n)) at a 3 TeV muon collider. A combined summary of results, including a few representative benchmark points, is presented in Section 6."},{"citing_arxiv_id":"2604.02219","ref_index":51,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Many Wrongs Make a Right: Leveraging Biased Simulations Towards Unbiased Parameter Inference","primary_cat":"hep-ph","submitted_at":"2026-04-02T16:11:07+00:00","verdict":"UNVERDICTED","verdict_confidence":"MODERATE","novelty_score":7.0,"formal_verification":"none","one_line_summary":"Template-Adapted Mixture Model uses many biased simulations for data-driven estimates of signal and background distributions, yielding unbiased signal fraction estimates with well-calibrated uncertainties.","context_count":1,"top_context_role":"background","top_context_polarity":"background","context_text":"wherem 1,2 are the masses of the two Higgs candidates composed of a pair of jets, ordered by thepT of the Higgs candidate, andσ 2 is a shared mass uncertainty which is irrelevant for minimization purposes. The event is ac- cepted if both masses satisfy|mi −125 GeV|<25 GeV. This selection criterion mimics traditional experimental techniques, like those in Ref. [51], albeit without the cor- rection in mass due to detector effects. This selection criterion greatly reduces the acceptance of background 17 100 110 120 130 140 150 m1 100 110 120 130 140 150m2 Data distribution in fiducial region for di-Higgs Case Study Signal Background FIG. 9. Di-Higgs case study TD dataset, showing 20% of the sample.50k background (red) points originate from the QCD"},{"citing_arxiv_id":"2601.11780","ref_index":88,"ref_count":4,"confidence":0.98,"is_internal_anchor":true,"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":"method","top_context_polarity":"use_method","context_text":"Re and P. Torrielli, Single-top 𝑡-channel hadroproduction in the four-flavour scheme with POWHEG and aMC@NLO, JHEP09(2012) 130, arXiv:1207.5391 [hep-ph]. [87] S. Frixione, E. Laenen, P. Motylinski and B. R. Webber,Angular correlations of lepton pairs from vector boson and top quark decays in Monte Carlo simulations, JHEP04(2007) 081, arXiv:hep-ph/0702198. [88] P. Artoisenet, R. Frederix, O. Mattelaer and R. Rietkerk, Automatic spin-entangled decays of heavy resonances in Monte Carlo simulations, JHEP03(2013) 015, arXiv:1212.3460 [hep-ph]. [89] ATLAS and CMS Collaborations, Reference Single Top-Quark Cross-Sections for ATLAS and CMS Analyses, ATL-PHYS-PUB-2025-035, 2025,url:https://cds.cern.ch/record/2942746."},{"citing_arxiv_id":"2511.23091","ref_index":66,"ref_count":1,"confidence":0.98,"is_internal_anchor":true,"paper_title":"Measurement of the top-quark mass using decays with a $J/\\psi$ meson at $\\sqrt{s}=$13 TeV with the ATLAS detector","primary_cat":"hep-ex","submitted_at":"2025-11-28T11:23:03+00:00","verdict":"ACCEPT","verdict_confidence":"LOW","novelty_score":6.0,"formal_verification":"none","one_line_summary":"Top quark mass measured at 172.17 ± 1.56 GeV via unbinned maximum-likelihood fit to m(ℓ μ⁺μ⁻) in ATLAS Run 2 data using J/ψ decays.","context_count":1,"top_context_role":"method","top_context_polarity":"use_method","context_text":"in matching the ME calculation and the PS are tested with a sample where the𝑝hard T parameter was set to 1 [65]. Thett production threshold may be sensitive to the modelling of off-shell effects and top-quark decay. To estimate the uncertainty in the modelling of these effects, an alternative sample was used, where the top-quark decay was simulated with theMadSpingenerator in theMadGraphframework [66] interfacedtoPowheg Boxv2. TheeffectofusingdifferentPSandhadronisationmodelisevaluatedusinga tt sample produced withPowheg Boxv2 interfaced toHerwig7.1.3 [67, 68] using the H7-UE set of tuned parameters and theMMHT2014lo[69] set of PDFs. For single-top-quark events the𝑡- and𝑡W-channels samples were simulated usingHerwig7.2.1. To evaluate the uncertainty in the modelling of the𝑏-quark"},{"citing_arxiv_id":"2511.07224","ref_index":50,"ref_count":1,"confidence":0.98,"is_internal_anchor":true,"paper_title":"Bridging the divide: axion searches and axino phenomenology at colliders","primary_cat":"hep-ph","submitted_at":"2025-11-10T15:44:58+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":4.0,"formal_verification":"none","one_line_summary":"In supersymmetric DFSZ axion models, the LHC with 140 fb^{-1} can probe axion decay constants below 10^{11} GeV for higgsino masses under 1 TeV via displaced neutralino decays to axino LSPs.","context_count":0,"top_context_role":null,"top_context_polarity":null,"context_text":null},{"citing_arxiv_id":"2511.01995","ref_index":27,"ref_count":1,"confidence":0.98,"is_internal_anchor":true,"paper_title":"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","primary_cat":"hep-ex","submitted_at":"2025-11-03T19:08:32+00:00","verdict":"ACCEPT","verdict_confidence":"LOW","novelty_score":3.0,"formal_verification":"none","one_line_summary":"CMS reports fiducial and differential ttγ cross sections plus ttγ/tt ratios at 13 TeV that agree with Standard Model expectations within uncertainties.","context_count":0,"top_context_role":null,"top_context_polarity":null,"context_text":null},{"citing_arxiv_id":"2510.17730","ref_index":117,"ref_count":1,"confidence":0.98,"is_internal_anchor":true,"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":"Hu, S. Chen and F.-K. Guo,Entanglement suppression and low-energy scattering of heavy mesons,Phys. Rev. D110(2024) 014001, [2404.05958]. [115] R. Aoude, G. Elor, G. N. Remmen and O. Sumensari,Positivity in Amplitudes from Quantum Entanglement,2402.16956. [116] I. Low and Z. Yin,An Area Law for Entanglement Entropy in Particle Scattering,2405.08056. [117] J. Thaler and S. Trifinopoulos,Flavor patterns of fundamental particles from quantum entanglement?,Phys. Rev. D111(2025) 056021, [2410.23343]. [118] I. Chernyshev, C. E. P. Robin and M. J. Savage,Quantum magic and computational complexity in the neutrino sector,Phys. Rev. Res.7(2025) 023228, [2411.04203]. [119] T.-R. Hu, K. Sone, F.-K. Guo, T. Hyodo and I."},{"citing_arxiv_id":"2509.14070","ref_index":42,"ref_count":1,"confidence":0.98,"is_internal_anchor":true,"paper_title":"Observation of $W^{+}W^{-}\\gamma$ production in $pp$ collisions at $\\sqrt{s}$ = 13 TeV with the ATLAS detector and constraints on anomalous quartic gauge-boson couplings","primary_cat":"hep-ex","submitted_at":"2025-09-17T15:16:12+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":6.0,"formal_verification":"none","one_line_summary":"ATLAS reports the observation of W⁺W⁻γ triboson production with 5.9σ significance and derives constraints on anomalous quartic gauge-boson couplings via effective field theory.","context_count":0,"top_context_role":null,"top_context_polarity":null,"context_text":null},{"citing_arxiv_id":"2504.05919","ref_index":50,"ref_count":1,"confidence":0.98,"is_internal_anchor":true,"paper_title":"Measurement of high-mass $t\\bar{t}\\ell^{+}\\ell^{-}$ production and lepton flavour universality-inspired effective field theory interpretations at $\\sqrt{s}=13$ TeV with the ATLAS detector","primary_cat":"hep-ex","submitted_at":"2025-04-08T11:18:22+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":4.0,"formal_verification":"none","one_line_summary":"ATLAS reports a measurement of high-mass ttbar ll production with no observed deviation from the Standard Model and derives EFT constraints on four-fermion operators from 140 fb^{-1} of Run 2 data.","context_count":0,"top_context_role":null,"top_context_polarity":null,"context_text":null},{"citing_arxiv_id":"2503.17461","ref_index":46,"ref_count":1,"confidence":0.98,"is_internal_anchor":true,"paper_title":"Electroweak diboson production in association with a high-mass dijet system in semileptonic final states from $pp$ collisions at $\\sqrt{s} = 13$ TeV with the ATLAS detector","primary_cat":"hep-ex","submitted_at":"2025-03-21T18:17:17+00:00","verdict":"ACCEPT","verdict_confidence":"MODERATE","novelty_score":6.0,"formal_verification":"none","one_line_summary":"Electroweak diboson plus high-mass dijet production observed at 7.4 sigma with signal strength 1.28, plus first semileptonic-channel limits on S02, T0 and M0 Wilson coefficients.","context_count":0,"top_context_role":null,"top_context_polarity":null,"context_text":null},{"citing_arxiv_id":"2412.10665","ref_index":29,"ref_count":1,"confidence":0.98,"is_internal_anchor":true,"paper_title":"Pretrained Event Classification Model for High Energy Physics Analysis","primary_cat":"hep-ph","submitted_at":"2024-12-14T03:45:07+00:00","verdict":"UNVERDICTED","verdict_confidence":"MODERATE","novelty_score":6.0,"formal_verification":"none","one_line_summary":"A GNN pretrained on 120M simulated HEP events generalizes to unseen processes and ATLAS data; fine-tuning boosts accuracy especially with small datasets, with CKA showing preserved encoders but altered intermediate layers.","context_count":0,"top_context_role":null,"top_context_polarity":null,"context_text":null},{"citing_arxiv_id":"2411.00096","ref_index":42,"ref_count":1,"confidence":0.98,"is_internal_anchor":true,"paper_title":"Why detect forward muons at a muon collider","primary_cat":"hep-ph","submitted_at":"2024-10-31T18:00:01+00:00","verdict":"UNVERDICTED","verdict_confidence":"MODERATE","novelty_score":4.0,"formal_verification":"none","one_line_summary":"Forward muon detection at muon colliders enables Higgs property measurements, invisible new physics searches via Higgs portal, and characterization of vector boson scattering through angular correlations.","context_count":0,"top_context_role":null,"top_context_polarity":null,"context_text":null},{"citing_arxiv_id":"1405.0301","ref_index":213,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations","primary_cat":"hep-ph","submitted_at":"2014-05-01T20:24:46+00:00","verdict":"ACCEPT","verdict_confidence":"MODERATE","novelty_score":7.0,"formal_verification":"none","one_line_summary":"MadGraph5_aMC@NLO automates tree-level, NLO, shower-matched, and merged cross-section computations for collider processes in a unified flexible framework.","context_count":1,"top_context_role":"method","top_context_polarity":"use_method","context_text":"In order to retain the advantages of the separation of produc tion from decays at the level of squared amplitudes, such as efficiency and ease of aut omation, without losing the capability of predicting spin correlations, MadGraph5 aMC@NLO uses the method introduced in ref. [211] 39, and studied there for top and W decays in the SM, which has been fully automated and extended to generic models in re f. [213]; the corresponding module in the code has been dubbed MadSpin40. The method is based on the following identity: lim {Γuk }→ 0 M ( x +y→ d1, 1 +...d np,p +s1 +...s l +X ) M (x +y→ u1 +...u p +s1 +...s l +X) p∏ k=1 ∆− 1 uk ≤ U ( {uk}p k=1 ) , (2.147) whereU is a universal factor, and the matrix elements at the numerat or and denominator on the l.h.s."}],"limit":50,"offset":0}