Reports

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2023-12-05
11:01
[PUBDB-2023-07478] Report

Search for new physics in events with two Higgs bosons and missing transverse momentum in √s=13TeV pp collisions at the ATLAS experiment
35 pp. ()  GO
A search is presented for pair production of higgsinos, the supersymmetric partners of the Higgs bosons, in scenarios with gauge-mediated supersymmetry breaking. Each higgsino is assumed to decay into a Higgs boson and a nearly-massless gravitino. [...]
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2023-12-05
10:59
[PUBDB-2023-07477] Report

Search for new phenomena with top-quark pairs in final states with one lepton, jets and missing transverse momentum using 140 $\mathrm{fb}^{-1}$ of data at $\sqrt{s}=13$ TeV with the ATLAS detector
[ATLAS-CONF-2023-043]
48 pp. ()  GO
A search for new phenomena with top quark pairs in final states with one isolated lepton, either an electron or a muon, jets, and large missing transverse momentum is performed. The search is performed using the Large Hadron Collider proton--proton collision dataset at a centre-of-mass energy of $\sqrt{s}=13$ TeV recorded by the ATLAS detector and corresponding to an integrated luminosity of 140 fb$^{-1}$. [...]
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2023-12-05
10:58
[PUBDB-2023-07476] Report

Run 2 results of searches for charginos and neutralinos at the ATLAS experiment using a statistical combination
[ATLAS-CONF-2023-046]
8 pp. ()  GO
Statistical combinations of searches for charginos and neutralinos using various decay channels are performed using 139fb−1 of pp collision data at √s=13TeV with the ATLAS detector at the Large Hadron Collider. Searches targeting wino-like chargino pair production, wino-like chargino-neutralino production, or higgsino production decaying via Standard Model bosons W,Z,h are combined to extend the mass reach to the produced SUSY particles by 30−100GeV. [...]
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2023-12-05
10:56
[PUBDB-2023-07475] Report

Observation of electroweak production of $W^+W^-$ in association with jets using the ATLAS Detector
[ATLAS-CONF-2023-039]
27 pp. ()  GO
A measurement of the production of W bosons with opposite electric charges in association with two jets is presented based on $140\,\mathrm{fb}^{-1}$ of data collected by the ATLAS detector in proton-proton collisions at $\sqrt{s}=13\,\mathrm{TeV}$, during LHC Run 2. The analysis is sensitive to the scattering of W bosons, which is of particular interest in the ATLAS physics programme as it can be used to probe the electroweak symmetry breaking mechanism of the Standard Model. [...]
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2023-12-05
10:55
[PUBDB-2023-07474] Report

Measurement of jet substructure in boosted $t\bar{t}$ events with the ATLAS detector using 140 fb$^{-1}$ of 13 TeV $pp$ collisions
[ATLAS-CONF-2023-027]
52 pp. ()  GO
Measurements of the substructure of top-quark jets are presented using top quarks produced in $pp$ interactions at 13 TeV and recorded with the ATLAS detector. Top-quark jets reconstructed with the anti-$kt$ algorithm with a radius parameter $R=1.0$ are selected in top-quark pair ($t\bar{t}$) events with one top quark decaying semileptonically and the other hadronically, and in $t\bar{t}$ events where both top quarks decay hadronically. [...]
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2023-12-05
10:53
[PUBDB-2023-07473] Report

Search for diphoton resonances in the 66 to 110 GeV mass range using 140 fb−1 of 13 TeV pp collisions collected with the ATLAS detector
[ATLAS-CONF-2023-035]
31 pp. ()  GO
Many extensions to the Higgs sector of the Standard Model motivate additional spin-0 bosons. This search focuses on light, spin-0 bosons decaying to two photons in the 66 to 110 GeV mass range, using 140 fb−1of ppcollisions produced by the Large Hadron Collider and collected by the ATLAS detector. [...]
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2023-12-05
10:51
[PUBDB-2023-07471] Report

Search for a CP-odd Higgs boson decaying to a heavy CP-even Higgs boson and a $Z$ boson in the $\ell\ell t\bar{t}$ and $\nu\bar{\nu}b\bar{b}$ final states using 140 fb$^{-1}$ of data collected with the ATLAS detector
[ATLAS-CONF-2023-034]
28 pp. ()  GO
A search for a heavy $CP$-odd Higgs boson, $A$, decaying into a $Z$ boson and a heavy $CP$-even Higgs boson, $H$, in the $\ell\ell t\bar{t}$ and $\nu\bar{\nu}b\bar{b}$ final states is presented using the full LHC Run 2 dataset of $pp$ collisions collected with the ATLAS detector at $\sqrt{s}=13$ TeV and corresponding to an integrated luminosity of $140$~fb$^{-1}$. The search for $A\to ZH$ is performed for the first time in the $\ell\ell t\bar{t}$ and $\nu\bar{\nu}b\bar{b}$ final states and extends the reach of previous searches in different final states in the region with $m_H>350$ GeV and $m_A>800$ GeV. [...]
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2023-12-05
10:50
[PUBDB-2023-07470] Report

Measurement of $t$-channel production of single top quarks and antiquarks in $pp$ collisions at 13 TeV using the full ATLAS Run 2 dataset
[ATLAS-CONF-2023-026]
36 pp. ()  GO
The production of single top quarks and top antiquarks via the $t$-channel exchange of a virtual $W$ boson are measured in proton--proton collisions at a centre-of-mass energy of 13 TeV. The full Run 2 dataset recorded with the ATLAS detector in the years 2015-2018 is used. [...]
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2023-12-05
10:49
[PUBDB-2023-07469] Report

Search for electroweak SUSY production in final states with two τ-leptons in √s=13 TeV pp collisions with the ATLAS detector
[ATLAS-CONF-2023-029]
41 pp. ()  GO
Three searches for the direct production of staus or charginos and neutralinos in final states with at least two hadronically decaying $\tau$-leptons are presented. For chargino and neutralino production, decays via intermediate staus or Wh bosons are considered. [...]
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2023-12-05
10:47
[PUBDB-2023-07468] Report

Precise measurements of Wand Z transverse momentum spectra with the ATLAS detector at √s=5.02 TeV and 13TeV
[ATLAS-CONF-2023-028]
63 pp. ()  GO
This note describes measurements of the transverse momentum spectra of Wand Z bosons produced in proton--proton collisions at centre-of-mass energies of √s=5.02 TeV and √s=13 TeV at the LHC. Measurements are performed in the electron and muon channels, W→ℓν and Z→ℓℓ (ℓ=e or μ), and for W events further separated by charge. [...]
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