J. Baines

Measurement of the top-quark mass using decays with a $J / ψ$ meson at $s =$ 13 TeV with the ATLAS detector

ATLAS Collaboration

The top-quark mass is measured using top-quark decays producing an isolated lepton and $J / ψ$ meson reconstructed in its $μ^{+} μ^{-}$ decay mode. The data sample was recorded with the A…

Search for signatures of electroweakinos with photons, jets, and large missing transverse momentum in $s = 13$ TeV pp collisions with the ATLAS detector

ATLAS Collaboration

A search for final states characterised by at least one isolated high transverse-momentum photon, jets and large missing transverse momentum is presented. Such a final state might…

Constraints on effective field theories via quadruple-differential angular decay rates from $t$ -channel single-top-quark production at $s = 13$ TeV with the ATLAS detector

ATLAS Collaboration

Events with $t$ -channel single top quarks are used to probe effective field theory operators in $s = 13$ TeV proton-proton collision data corresponding to 140 fb $^{- 1}$ record…

Search for Beyond the Standard Model physics with anomaly detection in multilepton final states in $pp$ collisions at $s = 13$ TeV with the ATLAS detector

ATLAS Collaboration

A model-agnostic search for Beyond the Standard Model physics is presented, targeting final states with at least four light leptons (electrons or muons). The search regions are sep…

hep-ex2025★ 3 cited

Evidence for the dimuon decay of the Higgs boson in pp collisions with the ATLAS detector

ATLAS Collaboration

A search for the dimuon decay of the Higgs boson is presented based on pp collision data recorded by ATLAS during Run 3 of the Large Hadron Collider, corresponding to an integrated…

Search for decays of the Higgs boson into scalar particles decaying into four or six $b$ -quarks using $pp$ collisions at $s = 13 TeV$ with the ATLAS detector

ATLAS Collaboration

A search for exotic decays of the Higgs boson $H$ into new scalar or pseudoscalar particles that subsequently decay into $b$ -quarks is presented. The search considers $Z H$ producti…

Observation of $t t ˉ γ γ$ production at $s =$ 13 TeV with the ATLAS detector

ATLAS Collaboration

This paper presents the first observation of top-quark pair production in association with two photons ( $t t ˉ γ γ$ ). The measurement is performed in the single-lepton decay chann…

Search for a new pseudoscalar decaying into a pair of bottom and antibottom quarks in top-associated production in $s$ =13 TeV proton-proton collisions with the ATLAS detector

ATLAS Collaboration

A search for a pseudoscalar $a$ produced in association with a top-quark pair, or in association with a single top quark plus a $W$ boson, with the pseudoscalar decaying into $b$ -q…

hep-ex2025★ 9 cited

Search for heavy neutral leptons in decays of W bosons using leptonic and semi-leptonic displaced vertices in $s = 13$ TeV $pp$ collisions with the ATLAS detector

ATLAS Collaboration

A search is performed for long-lived heavy neutral leptons (HNLs), produced through the decay of a $W$ boson along with a muon or electron. Two channels are explored: a leptonic ch…

Search for Higgs boson exotic decays into Lorentz-boosted light bosons in the four- $τ$ final state at $s = 13$ TeV with the ATLAS detector

ATLAS Collaboration

A search for exotic decays of the Higgs boson into a pair of low-mass scalars that subsequently decay into $τ$ -leptons, $H \to aa \to τ^{+} τ^{-} τ^{+} τ^{-}$ , is presented. In…

hep-ex2025★ 3 cited

Measurement of the top quark mass with the ATLAS detector using $t t ˉ$ events with a high transverse momentum top quark

ATLAS Collaboration

The mass of the top quark is measured using top-antitop-quark pair events with high transverse momentum top quarks. The dataset, collected with the ATLAS detector in proton--proton…

Configuration, Performance, and Commissioning of the ATLAS $b$ -jet Triggers for the 2022 and 2023 LHC data-taking periods

ATLAS Collaboration

In 2022 and 2023, the Large Hadron Collider produced approximately two billion hadronic interactions each second from bunches of protons that collide at a rate of 40 MHz. The ATLAS…

hep-ex2024★ 9 cited

Search for charged Higgs bosons produced in top-quark decays or in association with top quarks and decaying via $H^{\pm} \to τ^{\pm} ν_{τ}$ in 13 TeV $pp$ collisions with the ATLAS detector

ATLAS Collaboration

Charged Higgs bosons produced either in top-quark decays or in association with a top-quark, subsequently decaying via $H^{\pm} \to τ^{\pm} ν_{τ}$ , are searched for in 140 $\text{fb}^…

hep-ex2024★ 6 cited

Observation of $V V Z$ production at $s = 13$ TeV with the ATLAS detector

ATLAS Collaboration

A search for the production of three massive vector bosons, $V V Z (V = W, Z)$ , in proton-proton collisions at $s = 13$ TeV is performed using data with an integrated luminosity…

hep-ex2024★ 1 cited

Test of lepton flavour universality in $W$ -boson decays into electrons and $τ$ -leptons using $pp$ collisions at $s = 13$ TeV with the ATLAS detector

ATLAS Collaboration

A measurement of the ratio of the branching fractions, $R_{τ / e} = B (W \to τ ν) / B (W \to e ν)$ , is performed using a sample of $W$ bosons originating from top-quark decays to final s…

Precision calibration of calorimeter signals in the ATLAS experiment using an uncertainty-aware neural network

ATLAS Collaboration

The ATLAS experiment at the Large Hadron Collider explores the use of modern neural networks for a multi-dimensional calibration of its calorimeter signal defined by clusters of to…

hep-ex2024★ 13 cited

A search for triple Higgs boson production in the $6 b$ final state using $pp$ collisions at $s = 13$ TeV with the ATLAS detector

ATLAS Collaboration

A search for the production of three Higgs bosons ( $H H H$ ) in the $b b ˉ b b ˉ b b ˉ$ final state is presented. The search uses $126 fb^{- 1}$ of proton-proton collisio…

Measurement of top-quark pair production in association with charm quarks in proton-proton collisions at $s = 13$ TeV with the ATLAS detector

ATLAS Collaboration

Inclusive cross-sections for top-quark pair production in association with charm quarks are measured with proton-proton collision data at a center-of-mass energy of 13 TeV correspo…

Search for decays of the Higgs boson into a pair of pseudoscalar particles decaying into $b b ˉ τ^{+} τ^{-}$ using $pp$ collisions at $s = 13$ TeV with the ATLAS detector

ATLAS Collaboration

This paper presents a search for exotic decays of the Higgs boson into a pair of new pseudoscalar particles, $H \to aa$ , where one pseudoscalar decays into a $b$ -quark pair…