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A detailed map of Higgs boson interactions by the ATLAS experiment ten years after the discovery
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abstract
The Standard Model of particle physics describes the known fundamental particles and forces that make up our universe, with the exception of gravity. One of the central features of the Standard Model is a field that permeates all of space and interacts with fundamental particles. The quantum excitation of this field, known as Higgs field, manifests itself as the Higgs boson, the only fundamental particle with no spin. In 2012, a particle with properties consistent with the Higgs boson of the Standard Model was observed by the ATLAS and CMS experiments at the Large Hadron Collider at CERN. Since then, more than 30 times as many Higgs bosons have been recorded by the ATLAS experiment, allowing much more precise measurements and new tests of the theory. Here, on the basis of this larger dataset, we combine an unprecedented number of production and decay processes of the Higgs boson to scrutinize its interactions with elementary particles. Interactions with gluons, photons, and $W$ and $Z$ bosons -- the carriers of the strong, electromagnetic, and weak forces -- are studied in detail. Interactions with three third-generation matter particles (bottom ($b$) and top ($t$) quarks, and tau leptons ($\tau$)) are well measured and indications of interactions with a second-generation particle (muons, $\mu$) are emerging. These tests reveal that the Higgs boson discovered ten years ago is remarkably consistent with the predictions of the theory and provide stringent constraints on many models of new phenomena beyond the Standard Model.
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Showing 60 of 73 Pith papers that cite this
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Full-colour double-virtual amplitudes for associated production of a Higgs boson with a bottom-quark pair at the LHC
First analytic full-color two-loop five-particle amplitudes for associated Higgs-plus-bottom-quark-pair production at the LHC, with public C++ implementation.
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Precise predictions for $t \bar t H$ production at the LHC: inclusive cross section and differential distributions
First fully differential NNLO QCD predictions for ttH production at the LHC, with the missing two-loop virtual part estimated by two complementary approximations and merged with NLO electroweak corrections.
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Two Higgs Doublet Solutions to the Strong CP Problem
In softly broken CP and Abelian flavor symmetric two Higgs doublet theories, the strong CP parameter vanishes at tree and one loop for any second doublet mass, and two loop corrections are estimated at or below the cu...
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Higgs boson production in association with massive bottom quarks at NNLO+PS
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Combination of Higgs boson measurements at $\sqrt{s} =$ 13 TeV and their interpretations by the ATLAS experiment
The combined ATLAS Higgs measurements agree with the Standard Model and yield a self-coupling modifier kappa_lambda = 1.3 (+3.1/-1.6), a total width of 3.6 (+2.1/-1.6) MeV, and a b-quark running mass of 2.73 (+0.27/-0...
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High energy probes of Higgs self-coupling via $W$ boson fusion at future lepton colliders
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Combination of vector boson scattering measurements in leptonic final states in proton-proton collisions at $\sqrt{s}$ = 13 TeV
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Cross-section measurements of boosted Higgs boson production in final states with pairs of hadronically decaying $\tau$-leptons with the ATLAS experiment
ATLAS reports the first boosted H→ττ cross-section measurements for Higgs pT > 300 GeV, with an observed (expected) significance of 3.8 (3.3) standard deviations, consistent with the Standard Model.
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Search for new scalars via $X \rightarrow SH \rightarrow b\bar{b}b\bar{b}$ in proton-proton collisions at $\sqrt{s} = 13$ TeV with the ATLAS detector
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Unveiling Light-Quark Yukawa Flavor Structure via Dihadron Fragmentation at Lepton Colliders
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Freeze-in Production of Non-Abelian Millicharged Vector Dark Matter
A hidden SU(2) gauge sector broken to a massless dark photon can produce vector dark matter via freeze-in with portal couplings near 10^-7.
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Higgs Signal Strength Estimation with Machine Learning under Systematic Uncertainties
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Search for a Higgs boson produced in association with a charm quark and decaying to a W boson pair in proton-proton collisions at $\sqrt{s}$ = 13 TeV
The first search for a Higgs boson produced with a charm quark and decaying to a W-boson pair sees no excess, and combined with the diphoton channel limits the Higgs-charm coupling to below 47 times the standard model...
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Precision tests of third-generation four-quark operators: $gg \to h$ and $h \to \gamma \gamma$
Two-loop SMEFT corrections from third-generation four-quark operators to gg to h and h to gamma gamma are computed with full mass dependence, including new two-loop anomalous dimensions.
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Parton-shower and fixed-order QCD effects in Higgs-boson production in weak-boson fusion and its decays to bottom quarks
For WBF Higgs production with H to b bbar decay and a high b-jet pT cut, adding a parton shower to the decay reduces the previously catastrophic 40 percent fixed-order correction to about 10 percent and yields a stabl...
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Search for decays of the Higgs boson into scalar particles decaying into four or six $b$-quarks using $pp$ collisions at $\sqrt{s}= 13\,\mathrm{TeV}$ with the ATLAS detector
With 140 inverse femtobarns of 13 TeV LHC data, ATLAS finds no excess of Higgs decays to new scalars producing four or six bottom quarks, and sets 95% CL upper limits from 4% to 38% on the branching fractions.
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Light Neutral Higgs-Boson Production at $e^+e^-$ Colliders in the Complex MSSM and NMSSM: A Full One-Loop Analysis
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Searching for Di-Higgs Signatures of Light Charged Scalars
A roughly 130 GeV charged Higgs explaining the ATLAS t to bH+ excess and B-meson anomalies can be constrained, and perhaps discovered, by recasting SM di-Higgs 4b searches at the LHC.
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Constraining Inflation via FIMP dark matter using the $\beta$-function with collider implications
Combining Higgs inflation with feeble U(1)D vector dark matter via RG running narrows the allowed Higgs mixing angle and BSM Higgs mass, and predicts measurable deviations in Higgs self-couplings.
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Search for the nonresonant and resonant production of a Higgs boson in association with an additional scalar boson in the $\gamma\gamma\tau\tau$ final state in proton-proton collisions at $\sqrt{s}$ = 13 TeV
CMS finds no evidence for Higgs-pair or new-scalar production in the two-photon plus two-tau final state and sets new upper limits on these processes.
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The WWZ and ZH production rates match the standard model, with a combined significance of 4.5 standard deviations and first evidence at 13.6 TeV.
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Higgs boson precision analysis of two-Higgs-doublet models: Full LHC Run 1 and Run 2 data
The type-I two-Higgs-doublet model fits the combined LHC and Tevatron Higgs data best among the twelve scenarios considered, while wrong-sign type-II and type-IV scenarios fit worse than the Standard Model.
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Search for Higgs boson decays into a pair of pseudoscalar particles in the $\gamma\gamma\tau_{\text{had}}\tau_{\text{had}}$ final state using $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
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Toponium: the smallest bound state and simplest hadron in quantum mechanics
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Minimal Electroweak Baryogenesis via Domain Walls
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Search for heavy neutral Higgs bosons A and H in the $\mathrm{t\bar{t}}$Z channel in proton-proton collisions at 13 TeV
A CMS search in a previously unexplored final state finds no heavy neutral Higgs signal and sets the most stringent limits to date on the A to ZH to tt process at high masses.
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Correlating $A \to \gamma\gamma$ with electric dipole moments in the two Higgs doublet model in light of the diphoton excesses at 95 GeV and 152 GeV
The CP-odd scalar A in the flavor-aligned CP-violating 2HDM can explain the diphoton excesses at 95 and 152 GeV only in tuned regions that survive the electron EDM bound and predict measurable neutron and proton EDMs.
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Spontaneous CP Violation and Flavor Changing Neutral Currents in Minimal SO(10)
In minimal SO(10) with spontaneous CP violation, flavor-changing neutral currents and proton decay branching ratios are correlated through one mixing matrix, yielding a testable relation among future low-energy measurements.
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Search for Higgs boson decays into a $Z$ boson and a light hadronically decaying resonance in $pp$ collisions at $\sqrt{s}$=13 TeV with the ATLAS detector
ATLAS observes no excess in H to Z plus light hadronic resonance decays and sets 95% CL branching-fraction limits near 10% for low resonance masses, improving on the previous search.
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Search for rare decays of the Z and Higgs bosons to a J/$\psi$ or $\psi$(2S) meson and a photon in proton-proton collisions at $\sqrt{s}$ = 13 TeV
CMS sets 95% confidence upper limits on Z and Higgs decays to J/psi or psi(2S) plus a photon and constrains the ratio of Higgs-charm to Higgs-photon couplings.
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Measurement of the Higgs boson decay to a low-mass dilepton system and a photon in $pp$ collisions at $\sqrt{s} =$ 13 and 13.6 TeV with the ATLAS detector
Combined Run-2+Run-3 ATLAS measurement of H to ell ell gamma (m_ll < 30 GeV) gives mu = 1.03 (+0.35/-0.32) with 3.4 sigma observed (3.3 sigma expected) significance, consistent with the Standard Model.
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Search for a boosted Higgs boson decaying to bottom quark pairs in association with a W or Z boson in proton-proton collisions at $\sqrt{s}$ = 13 TeV
In 138 fb^-1 of 13 TeV proton collisions, CMS measures the boosted VH, H->bb signal strength as mu=0.72^{+0.75}_{-0.71}, consistent with the Standard Model.
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Measurement of the Higgs boson total decay width using the H $\to$ WW $\to$ e$\nu\mu\nu$ decay channel in proton-proton collisions at $\sqrt{s}$ = 13 TeV
CMS measures the Higgs total width as 3.9 +2.7 -2.2 MeV from the ratio of off-shell to on-shell H→WW production, consistent with the Standard Model.
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Feasibility to probe the dynamical scotogenic model at the LHC
In the dynamical scotogenic model, Drell-Yan production of fermionic dark matter could be probed at the HL-LHC for masses 100-220 GeV; scalar DM and VBF channels are unlikely to be observable.
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Measurement of the Higgs boson production in association with top quarks in multilepton final states in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
ATLAS measures the ttH cross-section at 0.63+0.20−0.19 of the Standard Model prediction (3.3σ observed, 5.3σ expected) and excludes top-Higgs CP-mixing angles |α|>62° at 68% confidence.
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Experimental Determination of BSM Triple Higgs Couplings at the HL-LHC with Neural Networks
A neural network trained on simulated m_hh distributions can extract the 2HDM coupling product xi_H^t x lambda_hhH at 10-20% precision in a hypothetical HL-LHC scenario with m_H = 450 GeV.
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Loop-corrected Trilinear Higgs Self-Couplings in the NMSSM with Inverse Seesaw Mechanism
Loop corrections from inverse-seesaw neutrinos and sneutrinos can change the SM-like Higgs self-coupling by up to 10.5% and the SM-like Higgs mass by up to 4.5% in the NMSSM with inverse seesaw.
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Deep Learning to Improve the Sensitivity of Higgs Pair Searches in the $4b$ Channel at the LHC
An attention-based full-event classifier constrains the Higgs self-coupling to (-0.53, 6.01) at 68% CL in the HH to 4b channel, a projected improvement over cut-based analyses.
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Large One-Loop Effects of BSM Triple Higgs Couplings on Double Higgs Production at $e^+e^-$ Colliders
One-loop corrected triple Higgs couplings in the 2HDM can boost e+e- to Zhh cross sections by factors up to about 6 and can make a heavy-Higgs resonance peak accessible at the ILC.
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A Multiplicative Formulation of the Higgs Lagrangian and the Fermion Mass Hierarchy between the charged leptons and heavy quarks
A multiplicative Higgs Lagrangian is tuned to reproduce six observed fermion masses with a universal Yukawa coupling near 0.13, matching the Higgs self-coupling.
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Search for bosons of an extended Higgs sector in b quark final states in proton-proton collisions at $\sqrt{s}$ = 13 TeV
A CMS search for additional Higgs bosons decaying to bottom quarks finds no signal and sets the most stringent limits to date in the high-mass regime.
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Black Holes and Higgs Dark Energy
The paper claims black holes can trap Higgs field energy as dark energy during stellar collapse, giving a 2:1 matter-to-dark-energy ratio and a 57 microsecond collapse time.
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Flavor Constraints in a Generational Three Higgs Doublet Model
A generational three-Higgs-doublet model is constructed, and flavor constraints show that its additional Higgs bosons can be as light as about 1.5 TeV if the only flavor violation is the minimal amount needed to repro...
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$CP$ violation in the $HZZ$ vertex and left-right asymmetries
Flavor-changing Z and Higgs couplings can induce CP-violating HZZ form factors up to about 10^-7, and a new asymmetry in Z* -> Z H is proposed to search for them.
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Precision Higgs Constraints in U(1) Extensions of the Standard Model with a Light Z'-Boson
In U(1) extensions with a light Z', the Higgs decay h->Z'Z' strengthens bounds from ZZ* signal strength measurements beyond the total signal strength alone.
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Probing a 2HDM Type-I light Higgs state via $H_{\rm SM} \to hh \to b\bar b\gamma \gamma$ at the LHC
A fast-simulation study of the Type-I two-Higgs-doublet model finds that five of six benchmark points with a light Higgs mass between 25 and 44 GeV reach above 5 sigma significance in the b bbar gamma gamma final stat...
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