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ATLAS PUB Notes

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2025-11-07
18:41
Optimizations of the ATLAS ITk GNN reconstruction pipeline
The HL-LHC upgrade of the ATLAS inner detector (ITk) brings an unprecedented challenge, both in terms of the large number of silicon cluster readouts and the throughput required for budget-constrained track reconstruction. [...]
ATL-PHYS-PUB-2025-046. - 2025 - 26.
Original Communication (restricted to ATLAS) - Full text

Detailed record
2025-11-07
10:33
Preliminary tracking studies involving FPGA accelerators for the ATLAS Event Filter at the HL-LHC
As part of the ATLAS TDAQ Phase-II upgrade project, the Event Filter Tracking system will allow online tracking for the trigger of the ATLAS experiment in the HL-LHC era. [...]
ATL-DAQ-PUB-2025-002. - 2025 - mult..
Original Communication (restricted to ATLAS) - Full text

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2025-11-03
22:14
Tracking in Dense Environments with Transformers
This work presents a novel application of machine learning to the pattern-recognition stage of charged-particle reconstruction, enabling learned hit-to-track association within dense environments, such as the cores of high-$p_\mathrm{T}$ jets. [...]
ATL-PHYS-PUB-2025-045. - 2025 - mult..
Original Communication (restricted to ATLAS) - Full text

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2025-11-03
21:59
Development of secondary vertex reconstruction using tracks in the ATLAS Muon Spectrometer for long-lived particle decays
Many promising beyond the Standard Model (BSM) theories predict invisible long-lived particles (LLPs) that travel macroscopic distances before decaying into visible Standard Model (SM) particles with a common spatial origin. [...]
ATL-PHYS-PUB-2025-044. - 2025 - Mult..
Original Communication (restricted to ATLAS) - Full text

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2025-10-20
10:23
Summary plots for Axion-like particle models
This note presents summary plots for the 95% confidence level limits on the cross-section times branching ratio for axion-like particles (ALPs), for both prompt and long-lived scenarios. [...]
ATL-PHYS-PUB-2025-043. - 2025 - mult..
Original Communication (restricted to ATLAS) - Full text

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2025-10-19
18:45
Summary plots for beyond Standard Model Higgs boson benchmarks for direct and indirect searches
This note presents an update of the plots that summarize the interpretations of various searches for additional Higgs bosons beyond the Standard Model, as well as the Higgs boson coupling combination, in the hMSSM, the 2HDM and the GM model. [...]
ATL-PHYS-PUB-2025-042. - 2025 - 25.
Original Communication (restricted to ATLAS) - Full text

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2025-10-19
15:20
Dark matter summary plots for s-channel and dark Higgs models
This note presents summary plots for dark matter simplified models with spin-1 and spin-0 mediators and a dark Higgs model. [...]
ATL-PHYS-PUB-2025-041. - 2025 - mult..
Original Communication (restricted to ATLAS) - Full text

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2025-10-19
12:40
Projected sensitivity for non-resonant production of vector leptoquarks and single production of vector-like $T$ quarks in final states with b-jets with the ATLAS experiment at the HL-LHC
Projected sensitivity for $t$-channel vector leptoquark in final states with $b$-jets, and single-production vector-like $T$ quark (VLT) decaying to $W(\ell \nu)b$, using the ATLAS experiment at the High Luminosity LHC (HL-LHC) is presented: obtained from the extrapolation of analyses from the Run 2 dataset, using 140 $\mathrm{fb^{-1}}$ of data at $\sqrt{s} = 13$ TeV. [...]
ATL-PHYS-PUB-2025-040. - 2025 - 14.
Original Communication (restricted to ATLAS) - Full text

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2025-10-18
19:43
Summary plots for Higgs boson mediated hidden sector involving long-lived particles
This note presents summary plots for the Higgs portal scenario, in which the Standard Model (SM) Higgs boson interacts with a neutral scalar particle from a hidden sector that couples only weakly to SM particles. [...]
ATL-PHYS-PUB-2025-039. - 2025 - mult..
Original Communication (restricted to ATLAS) - Full text

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2025-10-18
19:32
Summary plots for Heavy Neutral Leptons
This note presents summary plots for a Majorana heavy neutral lepton that mixes with a single lepton flavour of the Standard Model. [...]
ATL-PHYS-PUB-2025-038. - 2025 - mult..
Original Communication (restricted to ATLAS) - Full text

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