ATLAS Papers

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2026-01-19
08:14

Observation of a cross-section enhancement near the $t\bar{t}$ production threshold in $\sqrt{s}=13$ TeV $pp$ collisions with the ATLAS detector / ATLAS Collaboration
A measurement of $t\bar{t}$ production is presented in the invariant-mass region near the pair production threshold, $m_{t\bar{t}} \sim 345$ GeV, in final states with two charged leptons and multiple jets. [...]
arXiv:2601.11780 ; CERN-EP-2026-002. - 2026 - 64.
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2026-01-09
10:52

Search for long-lived particles using displaced vertices of oppositely charged leptons in 140 fb$^{-1}$ of pp collisions at $\sqrt{s} = 13$ TeV with the ATLAS detector / ATLAS Collaboration
A search is presented for long-lived particles decaying into an oppositely charged lepton pair, $\mu^{+}\mu^{-}$, $e^{+}e^{-}$, or $e^{\pm}\mu^{\mp}$, that form a vertex within the inner tracking system of the ATLAS detector at the Large Hadron Collider, displaced from the primary proton-proton interaction region. [...]
arXiv:2601.05664 ; CERN-EP-2025-293. - 2026 - 40.
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2026-01-08
14:59

Measurement of differential $t$-channel single top (anti)quark production cross-sections at 13 TeV with the ATLAS detector / ATLAS Collaboration
The production of single top quarks and top antiquarks via the $t$-channel exchange of a virtual $W$ boson is measured in proton-proton collisions at a centre-of-mass energy of 13 TeV at the Large Hadron Collider. [...]
arXiv:2601.04938 ; CERN-EP-2025-286. - 2026 - 65.
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2025-12-23
11:51

Search for $t\bar{t}$ resonances in final states with exactly one or two leptons using 140 fb$^{-1}$ of pp collision data at $\sqrt{s}=13$ TeV with the ATLAS experiment / ATLAS Collaboration
A search for heavy spin-1 and spin-2 resonances decaying into a top-antitop-quark pair has been performed with 140 fb$^{-1}$ of proton-proton collision data collected by the ATLAS experiment at the Large Hadron Collider at a centre-of-mass energy of $\sqrt{s}=13$ TeV. [...]
arXiv:2512.17856 ; CERN-EP-2025-281. - 2025 - 63.
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2025-12-22
07:52

Measurement of inclusive dijet cross-sections in proton-proton collisions at $\sqrt{s} = 13$ TeV with the ATLAS detector / ATLAS Collaboration
Inclusive dijet cross-sections have been measured in proton-proton collisions at a centre-of-mass energy of 13 TeV using data with an integrated luminosity of 140 fb$^{-1}$, recorded by the ATLAS detector at the Large Hadron Collider during 2015-2018. [...]
arXiv:2512.19073 ; CERN-EP-2025-283. - 2025 - 51.
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2025-12-22
07:42

Calibration of the jet energy scale and resolution of small-radius jets using semileptonic $t\bar{t}$ events with the ATLAS detector / ATLAS Collaboration
A measurement of correction factors for the hadronic jet energy scale and resolution in the ATLAS detector is presented. [...]
arXiv:2512.17482 ; CERN-EP-2025-262. - 2025 - 47.
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2025-12-03
20:22

Performance and efficiency of a transformer-based quark/gluon jet tagger in the ATLAS experiment / ATLAS Collaboration
A deep-learning approach based on the transformer architecture is developed to distinguish between jets originating from quarks and gluons. [...]
arXiv:2512.03949 ; CERN-EP-2025-252. - 2025 - 50.
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2025-12-01
07:36

Measurement of the top-quark mass using decays with a $J/\psi$ meson at $\sqrt{s}=$13 TeV with the ATLAS detector / ATLAS Collaboration
The top-quark mass is measured using top-quark decays producing an isolated lepton and $J/\psi$ meson reconstructed in its $\mu^+\mu^-$ decay mode. [...]
arXiv:2511.23091 ; CERN-EP-2025-249. - 2025 - 50.
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2025-11-27
12:58

Search for $H\rightarrow c\bar{c}$ and measurement of $H \rightarrow b\bar{b}$ in vector-boson fusion production with the ATLAS detector / ATLAS Collaboration
A search for Standard Model (SM) Higgs bosons produced via vector-boson fusion at the Large Hadron Collider and decaying into a charm quark-antiquark pair ($H \rightarrow c\bar{c}$) is presented. [...]
arXiv:2511.21911 ; CERN-EP-2025-247. - 2025 - 35.
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2025-11-26
15:39

Search for signatures of electroweakinos with photons, jets, and large missing transverse momentum in $\sqrt{s}=13$ TeV pp collisions with the ATLAS detector / ATLAS Collaboration
A search for final states characterised by at least one isolated high transverse-momentum photon, jets and large missing transverse momentum is presented. [...]
arXiv:2511.21240 ; CERN-EP-2025-198. - 2025 - 45.
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