NNLO+PS matching for gluon-fusion Higgs pair production is implemented in MiNNLOPS with approximate top-mass effects, validated against fixed-order NNLO and compared to GENEVA, with results for decay channels and trilinear coupling variations.
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Aad, et al., Highlights of the HL-LHC physics projections by ATLAS and CMS (4 2025).arXiv: 2504.00672
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abstract
The ATLAS and CMS experiments are unique drivers of our fundamental understanding of nature at the energy frontier. In this contribution to the update of the European Strategy for Particle Physics, we update the physics reach of these experiments at the High-Luminosity LHC (HL-LHC) in a few key areas where they will dominate the state-of-the-art for decades to come.
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The work demonstrates masked-token prediction with transformers for model-independent anomaly detection in LHC data, achieving strong results on top-rich BSM signatures like four-top production using VQ-VAE tokenization.
Starobinsky supergravity coupled to the MSSM links the CMB inflationary scale to the Higgs boson mass (~125 GeV) and predicts thermal wino dark matter at ~3 TeV, testable at future colliders and direct detection experiments.
CMS sets 95% CL upper limits on σ(X)B(X→ZZ) (300 pb–24 fb) and σ(Z')B(Z'→ZH) (0.4 pb–12 fb) for resonances up to 6 TeV in the bbττ channel with no SM deviation observed.
In extended scalar sectors near the alignment limit, higher-dimensional interactions can make two-, three-, or four-Higgs final states the dominant discovery mode at the LHC via gluon fusion.
High-energy amplitude ratios for longitudinal di-boson production approach unity in the SM and dimension-6 SMEFT but not necessarily in HEFT, making the W±_L Z_L to W±_L h cross section ratio a promising discriminator between linear and non-linear electroweak symmetry at the HL-LHC.
Hard final-state radiation measurably destroys the spin entanglement of fermion-antifermion pairs, and the effect should already be visible in LHC ttbar+jet and Belle II tau+tau-gamma data.
Leading two-loop corrections to λ_hhh and λ_hhH in the 2HDM are computed, with renormalisation of the alignment limit and impact on di-Higgs distributions.
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}.
One-loop corrections in the complex Higgs triplet model shift the 125 GeV Higgs decay rates to WW* and ZZ* upward by a few percent relative to the SM, while allowing up to -20% deviation in gamma gamma and 100% in the self-coupling.
Gauge symmetries of the Standard Model are suggested to be emergent, with an emergence scale of about 10^16 GeV making dark energy density similar in magnitude to light Majorana neutrino masses.
Interference effects and extra decay channels in N2HDM resonant triple Higgs production significantly alter kinematic distributions, limiting simplified approximations.
FCC-ee projections indicate at least 10 times better precision on the H to tau tau cross-section than the LHC through ZH and VBF channels plus improved tau reconstruction methods.
Higgs precision data now meaningfully tightens SMEFT constraints and increases the lower bound on new physics scales across different flavor assumptions.
citing papers explorer
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NNLO+PS Higgs-pair production in MiNNLOPS
NNLO+PS matching for gluon-fusion Higgs pair production is implemented in MiNNLOPS with approximate top-mass effects, validated against fixed-order NNLO and compared to GENEVA, with results for decay channels and trilinear coupling variations.
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Masked-Token Prediction for Anomaly Detection at the Large Hadron Collider
The work demonstrates masked-token prediction with transformers for model-independent anomaly detection in LHC data, achieving strong results on top-rich BSM signatures like four-top production using VQ-VAE tokenization.
-
Higgs boson mass and thermal wino dark matter from Starobinsky supergravity with the MSSM
Starobinsky supergravity coupled to the MSSM links the CMB inflationary scale to the Higgs boson mass (~125 GeV) and predicts thermal wino dark matter at ~3 TeV, testable at future colliders and direct detection experiments.
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Study of ZZ and ZH production in the bb$\tau\tau$ final state and search for high-mass spin-0 and spin-1 resonances in proton-proton collisions at $\sqrt{s}$ = 13 TeV
CMS sets 95% CL upper limits on σ(X)B(X→ZZ) (300 pb–24 fb) and σ(Z')B(Z'→ZH) (0.4 pb–12 fb) for resonances up to 6 TeV in the bbττ channel with no SM deviation observed.
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Alignment and Enhanced Multi-Higgs Production
In extended scalar sectors near the alignment limit, higher-dimensional interactions can make two-, three-, or four-Higgs final states the dominant discovery mode at the LHC via gluon fusion.
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Electroweak Restoration: SMEFT and HEFT
High-energy amplitude ratios for longitudinal di-boson production approach unity in the SM and dimension-6 SMEFT but not necessarily in HEFT, making the W±_L Z_L to W±_L h cross section ratio a promising discriminator between linear and non-linear electroweak symmetry at the HL-LHC.
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Experimental prospects for quantum decoherence measurements at colliders
Hard final-state radiation measurably destroys the spin entanglement of fermion-antifermion pairs, and the effect should already be visible in LHC ttbar+jet and Belle II tau+tau-gamma data.
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Refining two-loop corrections to trilinear Higgs couplings in the Two-Higgs-Doublet Model
Leading two-loop corrections to λ_hhh and λ_hhH in the 2HDM are computed, with renormalisation of the alignment limit and impact on di-Higgs distributions.
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Aspects of a Five-Dimensional $U(1)_{L_\mu - L_\tau}$ Model at Future Muon-Based Colliders
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}.
-
Radiative corrections to decays of the 125 GeV Higgs boson in the complex Higgs triplet model
One-loop corrections in the complex Higgs triplet model shift the 125 GeV Higgs decay rates to WW* and ZZ* upward by a few percent relative to the SM, while allowing up to -20% deviation in gamma gamma and 100% in the self-coupling.
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Emergent Gauge Symmetries in Particle Physics and Cosmology
Gauge symmetries of the Standard Model are suggested to be emergent, with an emergence scale of about 10^16 GeV making dark energy density similar in magnitude to light Majorana neutrino masses.
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Kinematic Riffs and Interference Effects in Triple Higgs Production in the N2HDM
Interference effects and extra decay channels in N2HDM resonant triple Higgs production significantly alter kinematic distributions, limiting simplified approximations.
-
Projections of H$\to\tau\tau$ cross-section at FCC-ee
FCC-ee projections indicate at least 10 times better precision on the H to tau tau cross-section than the LHC through ZH and VBF channels plus improved tau reconstruction methods.
-
Impact of Higgs-boson measurements on SMEFT fits
Higgs precision data now meaningfully tightens SMEFT constraints and increases the lower bound on new physics scales across different flavor assumptions.
- Loop-Induced Higgs Boson Decays into Gauge Bosons in Radiative Natural Supersymmetry