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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Asymptotic formulae for likelihood-based tests of new physics
42 Pith papers cite this work, alongside 2,550 external citations. Polarity classification is still indexing.
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abstract
We describe likelihood-based statistical tests for use in high energy physics for the discovery of new phenomena and for construction of confidence intervals on model parameters. We focus on the properties of the test procedures that allow one to account for systematic uncertainties. Explicit formulae for the asymptotic distributions of test statistics are derived using results of Wilks and Wald. We motivate and justify the use of a representative data set, called the "Asimov data set", which provides a simple method to obtain the median experimental sensitivity of a search or measurement as well as fluctuations about this expectation.
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- abstract We describe likelihood-based statistical tests for use in high energy physics for the discovery of new phenomena and for construction of confidence intervals on model parameters. We focus on the properties of the test procedures that allow one to account for systematic uncertainties. Explicit formulae for the asymptotic distributions of test statistics are derived using results of Wilks and Wald. We motivate and justify the use of a representative data set, called the "Asimov data set", which provides a simple method to obtain the median experimental sensitivity of a search or measurement as w
co-cited works
years
2026 42representative citing papers
Neural simulation-based inference on unbinned top-quark pair data at 13 TeV yields improved gluon PDF precision over traditional binned analyses while incorporating experimental and theoretical uncertainties.
First differential cross-sections for γγ→ττ in Pb+Pb collisions yield 95% CL intervals -0.057 < a_τ < 0.035 and |d_τ| < 2.7×10^{-16} e cm.
A full-covariance formalism for PTA-astrometry ORF estimators forecasts graviton-mass upper limits of 4.41e-24 eV/c2 for current-like setups and 0.48e-24 eV/c2 for SKA/Theia-like future setups, with astrometry adding significant power in the latter case.
Quantum tomography of diboson spin density matrices yields superior sensitivity to CP-even and CP-odd SMEFT contributions, including quadratic new-physics terms not captured by traditional angular observables.
Relative branching fraction B(B0 → Λc+ Λc- KS0)/B(B+ → Λc+ Λc- K+) measured as 0.53 ± 0.05 ± 0.05 with 3.9σ evidence for Ξc(2923)+ and Ξc(2939)+ resonances consistent with isospin partners.
The ttbar production cross section in PbPb collisions at 5.36 TeV is measured as 3.42 +0.54-0.51 (stat) +0.50-0.43 (syst) μb and is consistent with NNLO pQCD predictions using nuclear PDFs.
Xe-125 positron decay branching ratio measured as 0.29% at 5.5 sigma significance, providing the first constraint on individual levels in I-125.
No excess found in search for T' to top plus phi; excludes T' masses 0.85-1.3 TeV at 95% CL for SM Higgs case with 5% width, and sets cross-section limits as low as 0.1 fb.
A 10 TeV muon collider could improve existing bounds on muon-Higgs-gauge and muon-top interactions by up to an order of magnitude over current limits and FCC-ee projections.
Source-informed event selection in multi-level neutrino reconstruction improves median point source sensitivity by factors of ~2-3 over uniform subsampling.
XENONnT measures solar 8B neutrino coherent scattering at 3.3 sigma, finds no light dark matter, and constrains the weak mixing angle at low momentum transfer.
No significant excess found; new exclusion limits reach m_H = 108 GeV for m_H - m_A = 78 GeV in the Inert Doublet Model.
Incorporating timing information from time-dependent new physics signals can improve LHC search sensitivity by up to a factor of two compared to standard time-invariant analyses.
For sub-GeV dark matter, the light and heavy mediator mass limits in direct detection are separated by up to three orders of magnitude in mediator mass, enabling precise sensitivity calculations for Si, Ge, and DAMIC-M targets.
LHC mono-W/Z searches with a new channel-separation method can exclude large ranges of neutral and charged mass splittings in the 70-75 GeV IDM dark matter scenario that fits astrophysical excesses.
CTAO could set competitive limits on dark matter annihilation cross sections from dwarf irregular galaxies, reaching around 2×10^{-24} cm³/s for 100 GeV WIMPs in the tau channel and exceeding dwarf spheroidal expectations for velocity-dependent cases due to subhalos.
No evidence found for a new heavy scalar resonance X decaying to Higgs plus new scalar Y in the four-bottom-quark final state; 95% CL upper limits set on cross section times branching fraction.
No evidence found for light charged Higgs bosons in ttbar events; upper limits set on B(t to H±b) of 0.07-1.12% at 95% CL for masses 40-160 GeV assuming 100% decay to cs.
A simultaneous fit to multiple ATLAS datasets constrains 48 SMEFT Wilson coefficients and matches subsets to 2HDM and heavy-vector models, finding consistency with the Standard Model.
A combined kitchen sink observable set of Energy Flow Polynomials and subjettiness variables outperforms standard baselines in sensitivity to a wide range of resonant signals, with new public benchmarks released and an attribute bagging variant reducing training cost.
No evidence found; excludes semiclassical black holes below 8.4-11.4 TeV and string balls below 9.0-10.7 TeV at 95% CL, and caps the quark-quark sphaleron fraction above 9 TeV at 0.0034.
DREAMuS proposes a muon-beam fixed-target setup at HIAF to probe GeV-scale muon-philic dark matter with sensitivity to couplings around 10^{-4} using background-suppressed signatures from a light flavor-violating mediator.
Hypertriton production yield in LHC pp collisions, described by nuclear coalescence, confirms its halo structure with a Lambda separation of 9.54 fm from the deuteron core.
citing papers explorer
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Search for single vector-like quark production in opposite-sign dilepton final states in proton-proton collisions at $\sqrt{s}$ = 13 TeV
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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Proton Structure from Neural Simulation-Based Inference at the LHC
Neural simulation-based inference on unbinned top-quark pair data at 13 TeV yields improved gluon PDF precision over traditional binned analyses while incorporating experimental and theoretical uncertainties.
-
Differential measurements of $\gamma\gamma\to\tau\tau$ and constraints on $\tau$-lepton electromagnetic moments in Pb+Pb collisions at $\sqrt{s_{_\text{NN}}} = 5.02$ TeV with ATLAS
First differential cross-sections for γγ→ττ in Pb+Pb collisions yield 95% CL intervals -0.057 < a_τ < 0.035 and |d_τ| < 2.7×10^{-16} e cm.
-
Forecasting graviton-mass constraints from the full covariance of PTA-astrometry ORF estimators
A full-covariance formalism for PTA-astrometry ORF estimators forecasts graviton-mass upper limits of 4.41e-24 eV/c2 for current-like setups and 0.48e-24 eV/c2 for SKA/Theia-like future setups, with astrometry adding significant power in the latter case.
-
Odd Physics Off the Diagonal: Constraining CP-violating SMEFT with Quantum Tomography
Quantum tomography of diboson spin density matrices yields superior sensitivity to CP-even and CP-odd SMEFT contributions, including quadratic new-physics terms not captured by traditional angular observables.
-
Study of the $B^0 \to \Lambda_c^+ \bar{\Lambda}_c^- K_S^0$ decay
Relative branching fraction B(B0 → Λc+ Λc- KS0)/B(B+ → Λc+ Λc- K+) measured as 0.53 ± 0.05 ± 0.05 with 3.9σ evidence for Ξc(2923)+ and Ξc(2939)+ resonances consistent with isospin partners.
-
Measurement of the top quark pair production cross section in PbPb collisions at $\sqrt{s_\mathrm{NN}}$ = 5.36 TeV
The ttbar production cross section in PbPb collisions at 5.36 TeV is measured as 3.42 +0.54-0.51 (stat) +0.50-0.43 (syst) μb and is consistent with NNLO pQCD predictions using nuclear PDFs.
-
Precision measurement of positron decay modes of Xe-125 in the LUX-ZEPLIN experiment
Xe-125 positron decay branching ratio measured as 0.29% at 5.5 sigma significance, providing the first constraint on individual levels in I-125.
-
Search for a new heavy resonance decaying to a top quark and a neutral scalar boson in proton-proton collisions at $\sqrt{s}$ = 13 TeV
No excess found in search for T' to top plus phi; excludes T' masses 0.85-1.3 TeV at 95% CL for SM Higgs case with 5% width, and sets cross-section limits as low as 0.1 fb.
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Probing Higgs and Top Interactions through the Muon Lens at multi-TeV Muon Colliders
A 10 TeV muon collider could improve existing bounds on muon-Higgs-gauge and muon-top interactions by up to an order of magnitude over current limits and FCC-ee projections.
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Improving Neutrino Point Source Sensitivity with Source-Informed Event Selection
Source-informed event selection in multi-level neutrino reconstruction improves median point source sensitivity by factors of ~2-3 over uniform subsampling.
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Probing the Solar $^8$B Neutrino Fog with XENONnT
XENONnT measures solar 8B neutrino coherent scattering at 3.3 sigma, finds no light dark matter, and constrains the weak mixing angle at low momentum transfer.
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Search for pair production of additional neutral scalars within the Inert Doublet Model in a final state with two electrons or two muons in proton-proton collisions at $\sqrt{s}$ = 13 TeV and 13.6 TeV
No significant excess found; new exclusion limits reach m_H = 108 GeV for m_H - m_A = 78 GeV in the Inert Doublet Model.
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Time-dependent signals of new physics at the LHC
Incorporating timing information from time-dependent new physics signals can improve LHC search sensitivity by up to a factor of two compared to standard time-invariant analyses.
-
Electronic Direct Detection of Light Dark Matter with Intermediate-Mass Mediators
For sub-GeV dark matter, the light and heavy mediator mass limits in direct detection are separated by up to three orders of magnitude in mediator mass, enabling precise sensitivity calculations for Si, Ge, and DAMIC-M targets.
-
LHC Mono-$W/Z$ Signatures as a Probe for Dark Matter Explanations of Astrophysical Excesses
LHC mono-W/Z searches with a new channel-separation method can exclude large ranges of neutral and charged mass splittings in the 70-75 GeV IDM dark matter scenario that fits astrophysical excesses.
-
Sensitivity of the Cherenkov Telescope Array Observatory to Gamma-Ray Signals in Dwarf Irregular Galaxies
CTAO could set competitive limits on dark matter annihilation cross sections from dwarf irregular galaxies, reaching around 2×10^{-24} cm³/s for 100 GeV WIMPs in the tau channel and exceeding dwarf spheroidal expectations for velocity-dependent cases due to subhalos.
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Search for a new heavy scalar resonance decaying into the Higgs boson and a new scalar particle in the $\mathrm{b}\bar{\mathrm{b}}\mathrm{b}\bar{\mathrm{b}}$ final state using proton-proton collisions at $\sqrt{s}$ = 13 TeV
No evidence found for a new heavy scalar resonance X decaying to Higgs plus new scalar Y in the four-bottom-quark final state; 95% CL upper limits set on cross section times branching fraction.
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Search for light charged Higgs bosons decaying to charm and strange quarks in $\mathrm{t\bar{t}}$ events in proton-proton collisions at $\sqrt{s}$ = 13 TeV
No evidence found for light charged Higgs bosons in ttbar events; upper limits set on B(t to H±b) of 0.07-1.12% at 95% CL for masses 40-160 GeV assuming 100% decay to cs.
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Effective field theory interpretation of ATLAS measurements involving the Higgs boson, electroweak bosons and the top quark
A simultaneous fit to multiple ATLAS datasets constrains 48 SMEFT Wilson coefficients and matches subsets to 2HDM and heavy-vector models, finding consistency with the Standard Model.
-
Kitchen Sink Anomaly Detection
A combined kitchen sink observable set of Energy Flow Polynomials and subjettiness variables outperforms standard baselines in sensitivity to a wide range of resonant signals, with new public benchmarks released and an attribute bagging variant reducing training cost.
-
A search for microscopic black holes, string balls, and sphalerons in proton-proton collisions at $\sqrt{s}$ = 13 TeV
No evidence found; excludes semiclassical black holes below 8.4-11.4 TeV and string balls below 9.0-10.7 TeV at 95% CL, and caps the quark-quark sphaleron fraction above 9 TeV at 0.0034.
-
DREAMuS: Dark matter REsearch with Advanced Muon Source
DREAMuS proposes a muon-beam fixed-target setup at HIAF to probe GeV-scale muon-philic dark matter with sensitivity to couplings around 10^{-4} using background-suppressed signatures from a light flavor-violating mediator.
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Wave-Function Femtometry: Hypertriton - The Ultimate Halo Nucleus
Hypertriton production yield in LHC pp collisions, described by nuclear coalescence, confirms its halo structure with a Lambda separation of 9.54 fm from the deuteron core.
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LHC signatures of a light pseudoscalar in a flipped two-Higgs scenario: the usefulness of boosted $b{\bar b}$ pairs
Boosted di-b-jet tagging plus BDT analysis yields 5-10 sigma significance for a light pseudoscalar in flipped 2HDM with 3 ab^{-1} including 10% systematics.
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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}.
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Search for charginos and neutralinos with $B-L$ $R$-parity violating decays in $\sqrt{s}=13$ TeV and $13.6$ TeV $pp$ collisions with the ATLAS detector
No evidence for charginos and neutralinos in R-parity violating Higgs-decay channels; masses 150-1100 GeV excluded at 95% CL assuming equal lepton branching fractions.
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Revisiting predictions for cosmic-ray antinucleon fluxes from Galactic Dark Matter
Updated predictions for cosmic antinuclei fluxes from dark matter yield tighter upper limits on light DM annihilation cross sections from AMS-02 antiproton data and show that GAPS could improve those limits by up to an order of magnitude below 50 GeV.
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Improved results on Higgs boson pair production in the 4b final state
CMS sets an observed upper limit of 4.4 on the HH signal strength μ_HH in the 4b final state at 13.6 TeV, improving prior LHC results by more than a factor of two in the resolved topology.
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Same-Sign Tetralepton Signature at $\mu$TRISTAN
The paper identifies promising parameter regions for observing same-sign tetralepton events from charged Higgs pair and single production decaying to muons and heavy neutral leptons at μTRISTAN.
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Search for dark matter produced in association with a dark Higgs boson decaying into a bottom quark-antiquark pair in proton-proton collisions at $\sqrt{s}$ = 13 TeV
New upper limits exclude mediator masses up to 4.5 TeV for a 50 GeV dark Higgs and up to 2.5 TeV for 150 GeV in a spin-1 mediator dark matter model, the most stringent to date for these masses.
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Search for quantum black holes in lepton+jet final states using proton-proton collisions at $\sqrt{s}=13.6$ TeV with the ATLAS detector
No significant excess of high-mass lepton+jet events is observed in 164 fb^{-1} of 13.6 TeV pp collisions, setting 95% CL upper limits on quantum black hole production cross-section times branching ratio that reach a mass scale of 9.4 TeV.
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Search for the single production of vector-like quarks decaying into a W boson and a b quark using single-lepton final states in proton-proton collisions at $\sqrt{s}$ = 13 TeV
No significant excess observed in search for vector-like quark single production to Wb, setting 95% CL upper limits on κ_W as low as 0.086 near 1.4 TeV mass and excluding masses below 2.4 TeV at κ_W=0.2.
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Sensitivity to top-quark FCNC interactions at future muon colliders
A 10 TeV muon collider with 10 ab^{-1} could reach O(10^{-3}) sensitivity on top-quark FCNC couplings, improving current ATLAS/CMS bounds by more than an order of magnitude.
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New Deep Learning Data Analysis Method for PROSPECT using GAPE: Genetic Algorithm Powered Evolution
GAPE evolves deep learning models that improve PROSPECT IBD signal classification, promising up to 2.8 times better signal-to-background ratio than conventional methods after bias mitigation via period-specific training.
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Probing Heavy Neutral Higgs Bosons via Single Vector-Like Bottom Quark Production at the HL-LHC
XGBoost multivariate analysis extends the 5-sigma discovery reach for singly produced vector-like bottom quarks decaying via heavy neutral Higgs bosons to 1.6 TeV at the HL-LHC with 3 ab^{-1}.
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Prospects for Measuring $H\to \rm{invisble}$ at the FCCee
FCC-ee at 240 GeV with 10.8 ab^{-1} could set a 95% CL upper limit of 0.15% on the branching ratio of Higgs to invisible particles.
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Possibility of Probing an Extra Higgs Boson at the Compact Linear Collider
CLIC can probe an additional neutral Higgs boson H in the Two Higgs Doublet Model through the process e+e- to H nu nu-bar with H decaying to WW in the dilepton channel.
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Limit on high energy neutrino emission from Abell 119 using IceCube 10-year muon track data
Upper limit on muon neutrinos from Abell 119 is 1.2 times below the flux predicted for hadronic gamma-ray production, marginally excluding that origin.
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Lepton Flavor Violating Higgs decays at the Compact Linear Collider
CLIC could place 95% CL upper limits of 10^{-4} to 10^{-5} on the branching fractions of h→eμ, h→τμ, and h→eτ with 4 ab^{-1} at 1.4 TeV and 5 ab^{-1} at 3 TeV.
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Machine Learning Study on Single Production of a Singlet Vector-like Lepton at the Large Hadron Collider
XGBoost machine learning improves discrimination in LHC searches for singlet vector-like leptons, yielding projected 2σ mass exclusion limits of 620 GeV (three-lepton) and 490 GeV (four-lepton) at 14 TeV with 3000 fb^{-1}.
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The FASER experiment at the Large Hadron Collider
FASER is now running at the LHC and has started delivering first collider-based neutrino data along with searches for new light particles.