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Article
Open AccessMeasurements of electroweak W±Z boson pair production in association with two jets in pp collisions at \( \sqrt{s} \) = 13 TeV with the ATLAS detector
Measurements of integrated and differential cross-sections for electroweak W±Z production in association with two jets (W±Zjj) in proton-proton collisions are presented. The data collected by the ATLAS detector a...
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Article
Open AccessSearch for long-lived heavy neutrinos in the decays of B mesons produced in proton-proton collisions at \( \sqrt{s} \) = 13 TeV
A search for long-lived heavy neutrinos (N) in the decays of B mesons produced in proton-proton collisions at ...
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Article
Open AccessSearch for heavy neutral leptons in final states with electrons, muons, and hadronically decaying tau leptons in proton-proton collisions at \( \sqrt{s} \) = 13 TeV
A search for heavy neutral leptons (HNLs) of Majorana or Dirac type using proton-proton collision data at ...
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Article
Open AccessAmplitude analysis of the \( {\Lambda}_{\textrm{b}}^0\to {\textrm{pK}}^{-}\upgamma \) decay
The resonant structure of the radiative decay Λ b 0 ...
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Article
Open AccessSearch for the decay of the Higgs boson to a pair of light pseudoscalar bosons in the final state with four bottom quarks in proton-proton collisions at \( \sqrt{\textrm{s}} \) = 13 TeV
A search is presented for the decay of the 125 GeV Higgs boson (H) to a pair of new light pseudoscalar bosons (a), followed by the prompt decay of each a boson to a bottom quark-antiquark pair,
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Article
Open AccessMeasurement of absolute branching fractions of \( {\textrm{D}}_{\textrm{s}}^{+} \) hadronic decays
Using e+e− collision data collected at the BESIII detector at center-of-mass energies between 4.128 and 4.226 GeV, corresponding to an integrated luminosity of 7.33 fb−1, we determine the absolute branching fract...
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Article
Open AccessMeasurement of t-channel production of single top quarks and antiquarks in pp collisions at 13 TeV using the full ATLAS Run 2 data sample
The production of single top quarks and top antiquarks via the t-channel exchange of a virtual W boson is measured in proton-proton collisions at a centre-of-mass energy of 13 TeV at the LHC using 140 fb−1 of ATL...
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Article
Open AccessMeasurements of the branching fraction ratio \( \mathcal{B}\left(\phi \to {\mu}^{+}{\mu}^{-}\right)/\mathcal{B}\left(\phi \to {\textrm{e}}^{+}{\textrm{e}}^{-}\right) \) with charm meson decays
Measurements of the branching fraction ratio B ϕ ...
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Article
Open AccessMeasurement of associated J/ψ-ψ(2S) production cross-section in pp collisions at \( \sqrt{s} \) = 13 TeV
The cross-section of associated J/ψ-ψ(2S) production in proton-proton collisions at a centre-of-mass energy of ...
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Article
Open AccessSearch for new particles in final states with a boosted top quark and missing transverse momentum in proton-proton collisions at \( \sqrt{s} \) = 13 TeV with the ATLAS detector
A search for events with one top quark and missing transverse momentum in the final state is presented. The fully hadronic decay of the top quark is explored by selecting events with a reconstructed boosted to...
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Article
Open AccessMultiplicity dependence of σψ(2S)/σJ/ψ in pp collisions at \( \sqrt{s} \) = 13 TeV
The ratio of production cross-sections of ψ(2S) over J/ψ mesons as a function of charged-particle multiplicity in proton-proton collisions at a centre-of-mass energy
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Article
Open AccessA measurement of ∆Γs
Using a dataset corresponding to 9 fb−1 of integrated luminosity collected with the LHCb detector between 2011 and 2018 in proton-proton collisions, the decay-time distributions of the decay modes ...
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Article
Open AccessElectron and photon efficiencies in LHC Run 2 with the ATLAS experiment
Precision measurements of electron reconstruction, identification, and isolation efficiencies and photon identification efficiencies are presented. They use the full Run 2 data sample collected by the ATLAS ex...
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Article
Open AccessSearch for ∆S = 2 nonleptonic hyperon decays Ω− → Σ0π− and Ω− → nK−
Using (27.12 ± 0.14) × 108 ψ(3686) events collected by the BESIII detector at the center-of-mass energy of ...
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Article
Open AccessSearch for electroweak production of supersymmetric particles in final states with two τ-leptons in \( \sqrt{s} \) = 13 TeV pp collisions with the ATLAS detector
Three searches for the direct production of τ-sleptons or charginos and neutralinos in final states with at least two hadronically decaying τ-leptons are presented. For chargino and neutralino production, decays ...
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Article
Open AccessMeasurement of the total and differential cross-sections of \( t\overline{t}W \) production in pp collisions at \( \sqrt{s} \) = 13 TeV with the ATLAS detector
Measurements of inclusive and differential production cross-sections of a top-quark-top-antiquark pair in association with a W boson ( ...
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Article
Open AccessATLAS Run 2 searches for electroweak production of supersymmetric particles interpreted within the pMSSM
A summary of the constraints from searches performed by the ATLAS collaboration for the electroweak production of charginos and neutralinos is presented. Results from eight separate ATLAS searches are consider...
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Article
Open AccessTest of CP-invariance of the Higgs boson in vector-boson fusion production and in its decay into four leptons
A search for CP violation in the decay kinematics and vector-boson fusion production of the Higgs boson is performed in the H → ZZ* → 4ℓ (ℓ = e, μ) decay channel. The results are based on proton-proton collision ...
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Article
Open AccessMeasurement of the branching fraction of B0 → J/ψπ0 decays
The ratio of branching fractions between B0 → J/ψπ0 and B+ → J/ψK*+ decays is measured with proton-proton collision data collected by the LHCb experiment, corresponding to an integrated luminosity of 9 fb−1. The ...
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Article
Open AccessSearch for \({{B} _{c} ^+} \!\rightarrow {{\pi } ^+} {\mu ^+\mu ^-} \) decays and measurement of the branching fraction ratio \({\mathcal {B}} ({{B} _{c} ^+} \!\rightarrow {\psi {(2S)}} {{\pi } ^+} )/{\mathcal {B}} ({{B} _{c} ^+} \!\rightarrow {{J \hspace{-1.66656pt}/\hspace{-1.111pt}\psi }} {{\pi } ^+} )\)
The first search for nonresonant \({{B} _{c} ^+} \!\rightarrow {{\pi } ^+} {\mu ^+\mu ^-} \) ...
