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ATLAS Notes

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2025-05-28
10:41
Identification of Boosted Higgs Bosons decaying into a pair of collimated $\tau$-leptons decaying hadronically with Transformer Neural Networks in ATLAS
This work presents a novel approach to identify boosted Higgs bosons decaying into a pair of collimated $\tau$-leptons decaying hadronically by extending the GN2X algorithm, which employs a transformer neural network architecture with low-level input variables and was originally developped to identify boosted Higgs bosons decaying hadronically into a pair of b-quarks or c-quarks. [...]
ATL-PHYS-PUB-2025-026. - 2025 - 17.
Original Communication (restricted to ATLAS) - Full text

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2025-05-26
15:27
Long-Lived and Dark Matter Searches at ATLAS and CMS / Alpigiani, Cristiano (University of Washington (US))
Many theories beyond the Standard Model (BSM) have been proposed to address several of the Standard Model shortcomings, such as the origin of dark matter and neutrino masses, the fine-tuning of the Higgs Boson mass, or the observed pattern of masses and mixing angles in the quark and lepton sectors. [...]
ATL-PHYS-PROC-2025-040. - 2025 - 5.
Original Communication (restricted to ATLAS) - Full text

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2025-05-23
09:44
Hard probes in heavy-ion collisions at ATLAS and CMS / Maj, Klaudia (AGH University of Krakow (PL))
Hard probes, including high-energy jets, heavy quarks, and photons, are essential tools for studying the hot and dense quark-gluon matter created in ultra-relativistic heavy-ion collisions. [...]
ATL-PHYS-PROC-2025-039. - 2025 - 4.
Original Communication (restricted to ATLAS) - Full text

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2025-05-21
20:05
Latest Higgs Boson Inclusive and Differential Cross-Section Measurements / Hayes, Robin (Nikhef National institute for subatomic physics (NL))
Throughout the Large Hadron Collider's Run 2, the ATLAS and CMS Collaborations made huge strides in characterizing the Higgs boson. [...]
ATL-PHYS-PROC-2025-038. - 2025 - 6.
Original Communication (restricted to ATLAS) - Full text

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2025-05-21
19:28
Top quark mass and properties summary plots May 2025
This note presents plots summarising ATLAS results and combinations of top quark mass measurements and other top quark properties..
ATL-PHYS-PUB-2025-025. - 2025 - mult..
Original Communication (restricted to ATLAS) - Full text

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2025-05-21
16:03
Top cross section summary plots - May 2025
Summary plots related to top-quark cross section measurements from ATLAS only and from ATLAS+CMS. [...]
ATL-PHYS-PUB-2025-024. - 2025 - mult..
Original Communication (restricted to ATLAS) - Full text

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2025-05-21
15:54
Top Quarks + X Summary Plots May 2025
This note presents summary plots of cross-section measurements and searches performed by ATLAS and CMS in the Top Quarks + X sector as of May 2025
ATL-PHYS-PUB-2025-023. - 2025 - mult..
Original Communication (restricted to ATLAS) - Full text

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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
17:30
Search for CP violation in 𝑾𝑯 production in 13 TeV 𝒑 𝒑 collisions with the ATLAS detector
This note presents a search for CP violation in the production of a Higgs boson in association with a $W$ boson ($WH$) using proton-proton collision data collected by the ATLAS detector at the Large Hadron Collider during Run 2, corresponding to an integrated luminosity of $140~\text{fb}^{-1}$ at a center-of-mass energy of 13 TeV. [...]
ATL-PHYS-PUB-2025-022. - 2025 - mult..
Original Communication (restricted to ATLAS) - Full text

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ATLAS Conference Notes (1,271)