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ATLAS Notes

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2025-03-24
22:53
Reinterpretation of searches for flavour-violating supersymmetry into flavour-violating dark matter models using 139 fb$^{-1}$ of ATLAS Run 2 data.
Weakly interacting massive particles are well motivated candidates to explain dark matter in the universe. [...]
ATL-PHYS-PUB-2025-010. - 2025 - mult..
Original Communication (restricted to ATLAS) - Full text

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2025-03-24
20:01
Projected uncertainty for a high-$p_{\mathrm{T}}$ top quark mass measurement with the ATLAS detector at the HL-LHC
This note presents a projection of the expected uncertainty for a top quark mass measurement with the ATLAS detector at the High Luminosity Large Hadron Collider (HL-LHC). [...]
ATL-PHYS-PUB-2025-009. - 2025 - mult..
Original Communication (restricted to ATLAS) - Full text

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2025-03-24
13:51
Heavy Neutral Lepton summary plots
This note presents plots summarizing the latest ATLAS 95% confidence level exclusion limits on a Majorana Heavy Neutral Lepton mixing with a single lepton flavour. [...]
ATL-PHYS-PUB-2025-008. - 2025 - 4.
Original Communication (restricted to ATLAS) - Full text

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2025-03-24
10:49
ATLAS searches for non-minimal and long-lived SUSY scenarios / Ushioda, Risa (Tokyo Metropolitan University (JP))
Supersymmetry (SUSY) elegantly solves the problems that cannot be explained by the Standard Model (SM). [...]
ATL-PHYS-PROC-2025-023. - 2025 - 8.
Original Communication (restricted to ATLAS) - Full text

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2025-03-20
18:31
The performance of the New Small Wheels of the ATLAS detector in the heart of LHC Run-3 / Tsigaridas, Stergios (TRIUMF (CA))
During the second long shutdown of the Large Hadron Collider (LHC) at CERN, the most important upgrade within the ATLAS experiment was replacement of the two inner endcap stations of the Muon Spectrometer (MS), with the New Small Wheels (NSW). [...]
ATL-MUON-PROC-2025-007. - 2025 - 4.
Original Communication (restricted to ATLAS) - Full text - Full text - Full text

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2025-03-20
17:31
The ATLAS ITk Strip Detector System for the Phase-II LHC Upgrade. / Lacasta Llacer, Carlos (Univ. of Valencia and CSIC (ES))
ATLAS is currently preparing for the HL-LHC upgrade, with an all-silicon Inner Tracker (ITk) that will replace the current Inner Detector. [...]
ATL-ITK-PROC-2025-010. - 2025 - 4.
Original Communication (restricted to ATLAS) - Full text

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2025-03-20
04:05
Heavy-ion physics highlights from ATLAS / Grabowska-Bold, Iwona (AGH University of Krakow (PL))
Recent measurements from the heavy-ion physics programme from the ATLAS experiment at the LHC are reviewed. [...]
ATL-PHYS-PROC-2025-022. - 2025 - 10.
Original Communication (restricted to ATLAS) - Full text

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2025-03-19
11:43
ATLAS QCD jet measurements / Zaplatilek, Ota (Czech Technical University in Prague (CZ))
This article presents a recent QCD measurement of the jet cross-section ratios from the ATLAS experiment at CERN’s Large Hadron Collider, using proton–proton collisions at a center-of-mass energy of 13 TeV. [...]
ATL-PHYS-PROC-2025-021. - 2025 - 4.
Original Communication (restricted to ATLAS) - Full text

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2025-03-18
12:06
Deriving constraints on long-lived axion-like particles from existing searches for exotic decays of the Higgs boson with the ATLAS detector
Two ATLAS searches for anomalous decays of the Higgs boson into pseudo-scalar particles are used to set exclusion limits for models containing decays to long-lived axion-like particles (ALPs). [...]
ATL-PHYS-PUB-2025-007. - 2025 - 13.
Original Communication (restricted to ATLAS) - Full text

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2025-03-18
09:11
The High-Granularity Timing Detector for ATLAS at HL-LHC / Pinol Bel, Joaquim (The Barcelona Institute of Science and Technology (BIST) (ES))
The increased particle flux expected at the HL-LHC poses a serious challenge for the ATLAS 1 detector performance, especially in the forward region which has reduced detector granularity. [...]
ATL-HGTD-PROC-2025-001. - 2025 - 10.
Original Communication (restricted to ATLAS) - Full text

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