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ATLAS Preprints

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2025-06-06
08:53
Observation of $t\bar{t}\gamma\gamma$ production at $\sqrt{s}=$13 TeV with the ATLAS detector / ATLAS Collaboration
This paper presents the first observation of top-quark pair production in association with two photons ($t\bar{t}\gamma\gamma$). [...]
arXiv:2506.05018 ; CERN-EP-2025-125. - 2025 - 37 p, 37.
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2025-06-02
20:18
Supersymmetry searches at ATLAS and CMS / Kwon, Hyejin (Antwerp U.) /ATLAS and CMS Collaborations
This document presents recent results from the ATLAS and CMS experiments at the CERN Large Hadron Collider (LHC) on supersymmetry (SUSY) searches. These searches provide results with some non-conventional SUSY search assumptions such as with compressed mass scenario or with long-lived particle scenario. [...]
CMS-CR-2025-123.- Geneva : CERN, 2025 - 5 p. Fulltext: PDF;
In : 59th Rencontres de Moriond on QCD and High Energy Interactions, La Thuile, Italia, 30 Mar - 6 Apr 2025

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2025-06-02
20:18
Standard Model W, Z (+jet) / Cipriani, Marco (INFN, Pisa ; Pisa U.) /ATLAS and CMS Collaborations
This document describes some recent measurements of single $W$ and $Z$ boson production, performed by the ATLAS and CMS Collaborations at the CERN Large Hadron Collider. These measurements provide stringent tests of theoretical calculations, as well as constraints on the parton distribution functions of the protons. [...]
CMS-CR-2025-117.- Geneva : CERN, 2025 - 5 p. Fulltext: PDF;
In : 59th Rencontres de Moriond on QCD and High Energy Interactions, La Thuile, Italia, 30 Mar - 6 Apr 2025

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2025-05-27
09:36
Transforming jet flavour tagging at ATLAS / ATLAS Collaboration
Jet flavour tagging enables the identification of jets originating from heavy-flavour quarks in proton-proton collisions at the Large Hadron Collider, playing a critical role in its physics programmes. [...]
arXiv:2505.19689 ; CERN-EP-2025-103. - 2025 - 39.
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2025-05-20
08:01
A continuous calibration of the ATLAS flavour-tagging classifiers via optimal transportation maps / ATLAS Collaboration
A calibration of the ATLAS flavour-tagging algorithms using a new calibration procedure based on optimal transportation maps is presented. [...]
arXiv:2505.13063 ; CERN-EP-2025-026. - 2025 - 62.
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2025-05-19
09:37
Search for vector-like quarks and vector-like leptons / Wang, Christina Wenlu (Fermilab) /ATLAS and CMS Collaborations
Many extensions of the Standard Model (SM) predict the existence of vector-like fermions--quarks (VLQs) and leptons (VLLs). This proceeding presents recent results from the ATLAS and CMS collaborations on searches for VLQs and VLLs using data collected at the LHC from 2016--2018 with proton-proton collisions of 13 TeV. [...]
CMS-CR-2025-113.- Geneva : CERN, 2025 - 7 p. Fulltext: PDF;
In : 59th Rencontres de Moriond on Electroweak Interactions and Unified Theories, La Thuile, It, 23 - 30 Mar 2025

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2025-05-16
16:58
Measurements of $W^+W^-$ production cross-sections in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector / ATLAS Collaboration
Measurements of $W^+W^-\rightarrow e^\pm \nu \mu^\mp \nu$ production cross-sections are presented, providing a test of the predictions of perturbative quantum chromodynamics and the electroweak theory. [...]
arXiv:2505.11310 ; CERN-EP-2025-091. - 2025 - 62.
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2025-05-13
17:14
Leptoquark searches at ATLAS and CMS / Neutelings, Izaak /ATLAS and CMS Collaborations
An overview of searches for leptoquarks in proton-proton collisions at ATLAS and CMS are presented, with a focus on results from the Run-2 dataset collected between 2016 and 2018 at $\sqrt{s}=13$\,TeV, and corresponding to an integrated luminosity of $137{-}140\,\mathrm{fb}^{-1}$. In particular, recent results are highlighted..
arXiv:2505.08738; CMS-CR-2025-115.- Geneva : CERN, 2025 - 6 p. Fulltext: CR2025_115 - PDF; 2505.08738 - PDF;
In : 59th Rencontres de Moriond on Electroweak Interactions and Unified Theories, La Thuile, It, 23 - 30 Mar 2025

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2025-05-13
16:37
The environmental impact, carbon emissions and sustainability of computing in the ATLAS experiment / ATLAS Collaboration
ATLAS, a general-purpose experiment at the Large Hadron Collider (LHC), operates a large internationally-distributed computing infrastructure, including over $10^6$ TB of managed data on disk and tape and almost one million simultaneously running CPU cores. [...]
arXiv:2505.08530 ; CERN-EP-2025-105. - 2025 - 51.
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2025-05-13
14:23
Observation of double parton scattering in same-sign W boson pair production in pp collisions at $\sqrt{s}=13$ TeV with the ATLAS detector / ATLAS Collaboration
This letter reports the measurement of double parton scattering in same-sign W boson pair production with the ATLAS detector. [...]
arXiv:2505.08313 ; CERN-EP-2025-109. - 2025 - 42.
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