ATLAS Notes

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2025-05-13
21:22

Modelling of Longitudinal-Longitudinal polarisation of the ZZ final state in the four-lepton decay channel at the ATLAS experiment
This note summarises the state-of-the-art modelling of the polarised $ZZ$ production used in the ATLAS Run2 $ZZ$ polarisation measurement. [...]
ATL-PHYS-PUB-2025-021. - 2025 - 23.
Original Communication (restricted to ATLAS) - Full text

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2025-05-12
20:45

Study of Higgs boson pair production in the $HH \rightarrow bb \gamma\gamma$ final state with 308 fb$^{-1}$ of data collected at $\sqrt{s} = 13$ TeV and 13.6 TeV by the ATLAS experiment
A search for Higgs boson pair production in the $b \overline{b} \gamma \gamma$ final state is performed. [...]
ATLAS-CONF-2025-005. - 2025 - mult..
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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2025-04-28
18:32

The ATLAS RPC Phase II upgrade for High Luminosity LHC era / Falsetti, Gregorio (Universita della Calabria e INFN (IT))
Resistive Plate Chamber detectors play a crucial role in triggering events with muons in the ATLAS central region}. [...]
ATL-MUON-PROC-2025-009. - 2025 - 3.
Original Communication (restricted to ATLAS) - Full text

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2025-04-23
15:04

Recent Electroweak Measurements with ATLAS / Vachon, Brigitte (McGill University, (CA))
The ATLAS experiment at the Large Hadron Collider continues to deliver high-precision measurements that probe the electroweak sector of the Standard Model. [...]
ATL-PHYS-PROC-2025-030. - 2025 - 9.
Original Communication (restricted to ATLAS) - Full text

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2025-04-22
11:50

Performance and longevity of ATLAS RPCs with new lower GWP mixtures / Simsek, Sinem (Istinye University (TR))
Resistive Plate Chambers (RPCs) are critical components of the muon systems of most HL-LHC experiments. [...]
ATL-MUON-PROC-2025-008. - 2025 - 4.
Original Communication (restricted to ATLAS) - Full text

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2025-04-17
14:26

Defect investigation in irradiated ATLAS18 ITk Strip Sensors using transient spectroscopy techniques / ATLAS Collaboration
With the upgrade of the LHC to the High-Luminosity LHC (HL-LHC), the Inner Detector will be replaced with the new all-silicon ATLAS Inner Tracker (ITk). [...]
ATL-ITK-PROC-2025-014. - 2025 - 10.
Original Communication (restricted to ATLAS) - Full text

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