ATLAS Conference Notes

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2025-07-07
16:19

Observation of a cross-section enhancement near the $t\bar{t}$ production threshold in $\sqrt{s}=13$ TeV $pp$ collisions with the ATLAS detector
A measurement is presented of $t\bar{t}$ production in the invariant-mass region near the pair production threshold, $m_{t\bar{t}} \sim 345\,\mathrm{GeV}$, in final states with two charged leptons and multiple jets. [...]
ATLAS-CONF-2025-008. - 2025 - mult..
Original Communication (restricted to ATLAS) - Full text

2025-07-07
16:18

Search for the Higgs boson decay to a $Z$ boson and a photon in $pp$ collisions at $\sqrt{s} = 13$ TeV and $13.6$ TeV with the ATLAS detector
A search for the Higgs boson decay to a $Z$ boson and a photon in the $\ell\ell\gamma$ ($\ell = e, \mu$) final state is performed using $pp$ collisions recorded with the ATLAS detector at $\sqrt{s}=13.6$ TeV during 2022--2024, corresponding to an integrated luminosity of 165 fb$^{-1}$. [...]
ATLAS-CONF-2025-007. - 2025 - mult..
Original Communication (restricted to ATLAS) - Full text

2025-07-07
16:16

Combined measurements of Higgs boson production and decay at $\sqrt{s} =$ 13 TeV using up to 140 fb$^{-1}$ of data collected by the ATLAS Experiment
This note presents combined measurements of Higgs boson production and decay using up to 140 fb$^{-1}$ of proton-proton collision data collected by the ATLAS experiment at the LHC at $\sqrt{s} = 13$ TeV. [...]
ATLAS-CONF-2025-006. - 2025 - mult..
Original Communication (restricted to ATLAS) - Full text

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

2025-04-08
20:57

Differential measurements of $\gamma\gamma\to\tau\tau$ using $\sqrt{s_{_\text{NN}}} = 5.02$ TeV Pb+Pb collisions with the ATLAS detector
This study presents differential fiducial cross-section measurements of photon-induced $\tau$-lepton pair production. [...]
ATLAS-CONF-2025-004. - 2025 - mult..
Original Communication (restricted to ATLAS) - Full text

2025-04-07
21:11

Measurement of coherent exclusive $J/\psi\to\mu^+\mu^-$ production in ultraperipheral Pb+Pb collisions at $\sqrt{s_{\textrm{NN}}}=5.36$ TeV with the ATLAS detector
This note presents a measurement of coherent exclusive $J/\psi\to\mu^+\mu^-$ production in ultraperipheral Pb+Pb collisions at $\sqrt{s_{\textrm{NN}}}=5.36$ TeV. [...]
ATLAS-CONF-2025-003. - 2025 - mult..
Original Communication (restricted to ATLAS) - Full text

2025-04-01
14:15

Measurements and interpretation of the Higgs boson differential and production mode cross sections in the $H \rightarrow ZZ^* \rightarrow 4\ell$ channel at $\sqrt{s}=13.6$ TeV with the ATLAS detector
Higgs boson production cross-sections are measured in the $H\rightarrow~ZZ^\ast\rightarrow~4\ell$ decay channel based on 56 fb$^{-1}$ of proton-proton collision data produced at the Large Hadron Collider at a centre-of-mass energy of 13.6 TeV and recorded by the ATLAS detector in 2022 and 2023. [...]
ATLAS-CONF-2025-002. - 2025 - 47.
Original Communication (restricted to ATLAS) - Full text

2025-04-01
08:31

Measurements of $Z\gamma$ differential cross sections and search for neutral triple gauge couplings in $pp$ collisions at $\sqrt{s} =$ 13 TeV with the ATLAS detector
The measurements of the cross sections for $Z\gamma$ production and the search for neutral triple gauge couplings (nTGC) through $ZZ\gamma$ or $\gamma^* Z\gamma$ vertices are presented, using the full Run2 proton-proton dataset of 140 fb$^{-1}$ produced by the LHC at $\sqrt{s}$ = 13 TeV and collected by the ATLAS detector. [...]
ATLAS-CONF-2025-001. - 2025 - mult..
Original Communication (restricted to ATLAS) - Full text

2024-11-04
09:58

Measurement of off-shell Higgs boson production in the $H^*\rightarrow ZZ\rightarrow 4\ell$ decay channel using a neural simulation-based inference technique with the ATLAS detector at $\sqrt{s}=13$~TeV
A measurement of off-shell Higgs boson production in the $H^*\to ZZ\to 4\ell$ decay channel is presented. [...]
ATLAS-CONF-2024-016. - 2024 - mult..
Original Communication (restricted to ATLAS) - Full text

2024-10-28
17:46

An implementation of Neural Simulation-Based Inference for Parameter Estimation in ATLAS
Neural Simulation-Based Inference (NSBI) is a powerful class of machine learning (ML)-based methods for statistical inference that naturally handles high-dimensional parameter estimation without the need to bin data into low-dimensional summary histograms. [...]
ATLAS-CONF-2024-015. - 2024 - mult..
Original Communication (restricted to ATLAS) - Full text

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