No excess observed in search for vector-like top quark T to tH in opposite-sign dilepton final states; 95% CL upper limits on sigma times BR range from 2.0 pb at 600 GeV to 0.1 pb at 1000 GeV.
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Navas, et al., Review of particle physics, Phys
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CMS observes η → μ⁺μ⁻e⁺e⁻ for the first time and measures its branching fraction as (2.4 ± 0.8) × 10^{-6}.
The measured cross-section ratio to a no-nuclear-effects baseline is 0.25, yielding a nuclear gluon suppression factor R_g^Pb of 0.55 at x ≈ 10^{-3} and μ² = 22.4 GeV².
First measurement of photonuclear D0 production cross section in ultraperipheral PbPb collisions as a function of pT and rapidity, compared to NLO pQCD with nuclear PDFs and CGC predictions.
First successful detection of extensive air showers using a small-aperture fluorescence telescope with a 25 cm Fresnel lens.
Heterotic string theory implies the QCD axion mass is bounded below by 0.5 neV and typically falls in [0.5, 0.8] neV across most compactifications.
Including dimension-8 SMEFT operators alters the allowed parameter space for dimension-6 coefficients in fits to top-decay helicity fractions due to non-trivial correlations and degeneracies at O(Λ^{-4}).
A multiplicative matching scheme reweights Born-level events in PYTHIA 8 so the first parton shower emission follows the real NLO matrix element, improving agreement with HERA DIS data.
CMS reports a simultaneous measurement of 25 N-subjettiness observables in 1-, 2-, and 3-prong jets, unfolded to stable particles with particle-level correlations for QCD modeling.
Spectroxide is a publicly available code package that evolves the photon Boltzmann equation from z ~ 5e6 to today to calculate CMB spectral distortions caused by heat or photon injection, with all code and tests generated by AI under human supervision and validated against analytic limits and prior
Dr.Sai autonomously executed full physics analysis pipelines on real BESIII data to re-measure ten J/psi decay branching fractions, matching established benchmarks without any manual coding.
The Core Representation Theorem states that the universal scheme-invariant carrier for QCD factorization is the relative tensor product C ⊗_A f over the interface algebra A encoding collinear counterterms.
Lattice QCD at the SU(3) symmetric point extracts energy levels for singlet and octet baryon-meson channels to inform the two-pole structure of Lambda(1405).
CMS measures soft-drop groomed radius and momentum balance plus a charged fragmentation function for b jets, observing dead-cone suppression compared to inclusive jets.
A momentum sum-and-difference analysis separates detector bias sources in two-body decays, enabling a projected Lambda mass measurement at LHCb with 0.7 keV/c² tracking systematics and 2.2 keV/c² total uncertainty.
The complexified exceptional Jordan algebra yields fermion mass ratios via a diagonal-action theorem on Sym^3(3) representations after triality breaking, with a universal eigenvalue spectrum fixed by the Jordan cubic.
A data-driven ddFONLL extrapolation method accounts for LHC-observed charm fragmentation non-universality to derive higher total charm cross sections from D0 fiducial measurements at 5 and 13 TeV, consistent with NNLO QCD predictions.
AMBer applies reinforcement learning with physics feedback to automate construction of neutrino flavor models that minimize free parameters, validated on known cases and extended to a new symmetry group.
Computes f_B, residual mass Λ, kinetic matrix element λ1, and Isgur-Wise slope in instanton vacuum with finite-mass heavy-light vertex calibrated to B data.
Dynamical dark energy with perturbations reverses the alleviation of neutrino mass tension seen in smooth models, preferring smaller masses due to degeneracies in growth data from CMB, BAO, RSD, and supernovae.
First estimates place inclusive branching ratios for antideuteron production from Lambda_b decays between 5.7e-4 and 1.4e-3 and from B- decays between 7.4e-6 and 4.3e-5, depending on hadronization scenario.
LCSR analysis of compact pentaquarks yields μ_u/μ_d = -2 for all currents and μ_c = 0 for one current, with numerical moments of order 1-3 μ_N that differ in flavor decomposition from molecular calculations.
TDA factorization with public DensityScattering code and SRG-And-Back scheme yields scattering observables on 3H, 3He, 4He, 6Li from chiral potentials with uncertainties below 6%.
Establishes the HQLaMET two-step factorization scheme to enable lattice QCD computation of the B-meson shape function by separating the effects of disparate scales.
citing papers explorer
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Measurement of D$^0$ meson photoproduction in ultraperipheral heavy ion collisions
First measurement of photonuclear D0 production cross section in ultraperipheral PbPb collisions as a function of pT and rapidity, compared to NLO pQCD with nuclear PDFs and CGC predictions.
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Jet fragmentation function and groomed substructure of bottom quark jets in proton-proton collisions at 5.02 TeV
CMS measures soft-drop groomed radius and momentum balance plus a charged fragmentation function for b jets, observing dead-cone suppression compared to inclusive jets.
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Improving systematic uncertainties on precision two-body mass measurements
A momentum sum-and-difference analysis separates detector bias sources in two-body decays, enabling a projected Lambda mass measurement at LHCb with 0.7 keV/c² tracking systematics and 2.2 keV/c² total uncertainty.
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Fermion mass ratios from the exceptional Jordan algebra
The complexified exceptional Jordan algebra yields fermion mass ratios via a diagonal-action theorem on Sym^3(3) representations after triality breaking, with a universal eigenvalue spectrum fixed by the Jordan cubic.
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A novel phenomenological approach to total charm cross-section measurements at the LHC
A data-driven ddFONLL extrapolation method accounts for LHC-observed charm fragmentation non-universality to derive higher total charm cross sections from D0 fiducial measurements at 5 and 13 TeV, consistent with NNLO QCD predictions.
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Towards AI-assisted Neutrino Flavor Theory Design
AMBer applies reinforcement learning with physics feedback to automate construction of neutrino flavor models that minimize free parameters, validated on known cases and extended to a new symmetry group.
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Quantum entanglement between partons in a strongly coupled quantum field theory
In unquenched scalar Yukawa theory, parton entanglement entropy encodes quantum information that cannot be reduced to Shannon entropy of parton distributions.
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Multiplexed SiPM Readout of Plastic Scintillating Fiber Detector for Muon Tomography
A diode-based multiplexing scheme reduces 21 SiPM channels to 7 electronic channels while delivering over 95% muon detection efficiency and 0.65 mm spatial resolution with only minor performance loss versus direct readout.
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Massive neutrinos and interacting dark matter look alike through the lens of lensing
Massive neutrinos and dark matter-baryon interactions produce degenerate suppressions in the CMB lensing power spectrum at next-generation experiment precision.
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Neural simulation-based inference of the Higgs trilinear self-coupling via off-shell Higgs production
A hybrid NSBI technique is presented for inferring the Higgs trilinear coupling via off-shell production in SMEFT, achieving near-theoretical-optimum sensitivity with expected HL-LHC constraints.
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Measurement of the dineutrino system kinematic variables in dileptonic top quark pair production in proton-proton collisions at$\sqrt{s}$ = 13 TeV
Differential cross sections for ttbar production in e+e-, mu+mu-, and e mu channels measured versus dineutrino pT and azimuthal separation using 138 fb-1 of 13 TeV CMS data, unfolded to particle level with unregularized least squares and found consistent with SM and MC predictions.
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NLO Corrections to Dimuonium Production in Photon-Photon Collision
NLO QED corrections to para- and ortho-dimuonium production in γγ collisions are calculated via NRQED, yielding negative corrections for both states.
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An analysis of nuclear parton distribution function based on relative entropy
A relative-entropy method with a minimum-relative-entropy hypothesis reproduces quark nPDF shapes from global fits and indicates that EPPS21 gluon central values align more closely with the hypothesis than nNNPDF3.0.
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Neutrino Mass, Vacuum Stability and Higgs Inflation with Vector-Like Quarks and a Single Right-Handed Neutrino
The Standard Model extended by n vector-like quarks and one right-handed neutrino stabilizes the Higgs quartic to the Planck scale, produces viable neutrino masses via Type-I seesaw, and yields inflationary observables n_s and r consistent with Planck and ACT data.
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The Standard Model partial unification scale as a guide to new physics model building
The Standard Model partial unification scale of non-Abelian gauge couplings at 2.8e16 GeV serves as the natural full unification scale M_X for new physics models where corrections to those couplings are equal or nearly equal.
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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
CMS reports fiducial and differential ttγ cross sections plus ttγ/tt ratios at 13 TeV that agree with Standard Model expectations within uncertainties.
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$K^*(892)$ Resonance Suppression in Ar+Sc Collisions at SPS Energies
UrQMD model simulations of K* resonances in Ar+Sc collisions at SPS energies capture essential features but underpredict the strong suppression observed in central NA61/SHINE data.
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$\mathcal{P}$, $\mathcal{T}$-violating axion-mediated interactions in RaOH molecule
Vibrations affect the axion-mediated long-range interaction in RaOH similarly to short-range scalar-pseudoscalar interactions studied earlier.
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A Likelihood Ratio Framework for Highly Motivated Subdominant Signals
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Future Circular Collider Feasibility Study Report: Volume 1, Physics, Experiments, Detectors
The FCC feasibility study describes how a staged electron-positron and hadron collider could deliver precision measurements on the Higgs, electroweak bosons, and top quark while searching for physics beyond the Standard Model.
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Analysis of molecular state ${{\eta}_cD^*}$ and ${J/\psi D^*}$ in the effective Lagrangian approach
Using effective Lagrangians under molecular assumptions for η_c D* and J/ψ D*, the authors estimate B_c production branching ratios of 10^{-4} and 10^{-5} respectively, with decay widths O(MeV).
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Lepton anomalous magnetic moments: Theory
The paper provides an overview of theoretical calculations for lepton anomalous magnetic moments arising from quantum corrections in the Standard Model.
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Renormalisation
An introductory review of renormalisation procedures, the renormalisation group, and scale-setting optimisation in gauge theories such as QCD.
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