ATLAS Conference Contributions

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2025-05-21
09:17

Lower limits on the Higgs boson lifetime via off-shell decays into $WW \to \ell \nu \ell \nu$ final states with the ATLAS detector. / Wolffs, Zef (Nikhef National institute for subatomic physics (NL)) ; ATLAS Collaboration
This article presents an analysis of the off-shell Higgs boson production rate in the $H^* \to WW$ decay mode and interprets the results in terms of the Higgs boson’s lifetime---or equivalently, its total width---focusing on final states in which both $W$ bosons decay leptonically. [...]
ATL-PHYS-PROC-2025-037. - 2025 - 4.
Original Communication (restricted to ATLAS) - Full text

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2025-05-20
11:38

Simulation of charge transport at the surface of planar silicon sensors / Scharf, Christian (Humboldt University of Berlin (DE)) ; Bruers, Ben (Deutsches Elektronen-Synchrotron (DE)) ; Ninca, Ilona-Stefana (Deutsches Elektronen-Synchrotron (DE)) ; Lacker, Heiko Markus (Humboldt University of Berlin (DE)) ; Bloch, Ingo (Deutsches Elektronen-Synchrotron (DE))
Radiation-hard silicon sensors used in high-energy physics require a high electric field and are susceptible to surface breakdown. [...]
ATL-ITK-PROC-2025-017. - 2025 - 8.
Original Communication (restricted to ATLAS) - Full text

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2025-05-19
12:10

Triboson and VBS results at ATLAS and CMS / Camarero Munoz, Daniel (Brandeis University (US))
Measurements of multiboson production at the LHC serve as powerful probes of the electroweak gauge structure of the Standard Model. [...]
ATL-PHYS-PROC-2025-036. - 2025 - 6.
Original Communication (restricted to ATLAS) - Full text

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2025-05-16
19:14

Searches for long-lived heavy neutral leptons and neutral long-lived particles in the muon spectrometer with the ATLAS detector / Trischuk, Dominique (Brandeis University (US))
This contribution presents two recent searches for long-lived particles from the ATLAS experiment. [...]
ATL-PHYS-PROC-2025-035. - 2025 - 6.
Original Communication (restricted to ATLAS) - Full text

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2025-05-16
18:24

Evidence for Longitudinally Polarized $W^\pm$ Bosons in the Electroweak Production of Same-Sign $W^\pm$ Boson Pairs in Association With Two Jets With the ATLAS Detector / Stange, Max Vincent (Technische Universitaet Dresden (DE))
These proceedings describe the first evidence for the longitudinal polarization in electroweak same-charged $W^\pm$ boson scattering and the most stringent limit on the fully longitudinally polarized scattering. [...]
ATL-PHYS-PROC-2025-034. - 2025 - 6.
Original Communication (restricted to ATLAS) - Full text

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2025-05-15
07:53

Pixel column issue in the ATLAS inner tracker modules / ATLAS Collaboration - task force chair task force chair
Pixel modules are currently being built for the ATLAS ITk Pixel detector upgrade. [...]
ATL-ITK-PROC-2025-016. - 2025 - 8.
Original Communication (restricted to ATLAS) - Full text

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2025-05-09
15:06

Measurement of the top-quark mass with the ATLAS detector using $t\bar{t}$ events with a high transverse momentum top quark / Watton, Elliot (University of Glasgow (GB))
This presents a recent ATLAS Collaboration measurement of the top-quark mass using top-antitop-quark pair events with a high transverse momentum top quark at the LHC. [...]
ATL-PHYS-PROC-2025-033. - 2025 - 6.
Original Communication (restricted to ATLAS) - Full text

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2025-05-08
08:53

Thermomechanical design validation for quad pixel modules for the ITk / Cunningham, Liam (University of Glasgow (GB)) ; ATLAS Pixel Collaboration
The current programme of upgrades to the ATLAS detector to take advantage of the opportunities presented by the High Luminosity LHC (HL-LHC) will include a complete replacement of the tracking system. [...]
ATL-ITK-PROC-2025-015. - 2025 - 5.
Original Communication (restricted to ATLAS) - Full text

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2025-05-06
12:05

Searching for direct slepton production in moderately compressed mass spectra with the ATLAS detector / Ruggiero, Alessandro (University of Oxford (GB))
These proceedings summarise results presented for the direct pair production of charged light-flavour sleptons ($\tilde{\ell}$), each decaying into a stable neutralino ($\tilde{\chi}^{0}_{1}$) and an associated Standard Model lepton. [...]
ATL-PHYS-PROC-2025-032. - 2025 - 4.
Original Communication (restricted to ATLAS) - Full text

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2025-05-02
08:29

Measurement of collective dynamics in small and large systems with the ATLAS detector. / Gilbert, Alexander Kevin (AGH University of Krakow (PL))
This proceeding presents ATLAS measurements of collective phenomena in p+Pb, Pb+Pb, and Xe+Xe collisions, including studies of the nuclear modification factor of charged hadrons in p+Pb, Pb+Pb, and Xe+Xe. [...]
ATL-PHYS-PROC-2025-031. - 2025 - 8.
Original Communication (restricted to ATLAS) - Full text

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