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ATLAS Preprints

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2024-11-25
12:57
Search for Higgs boson decays into a $Z$ boson and a light hadronically decaying resonance in 140 fb$^{-1}$ of 13 TeV $pp$ collisions with the ATLAS detector
A search for decays of the Higgs boson into a $Z$ boson and a light resonance, with a mass of 0.5-3.5 GeV, is performed using the full 140 fb$^{-1}$ dataset of 13 TeV proton-proton collisions recorded by the ATLAS detector during Run 2 of the LHC. [...]
CERN-EP-2024-261. - 2024
Fulltext - Previous draft version

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2024-11-25
11:10
New ideas for measurements and searches at the HL-LHC / Soffi, Livia (INFN, Rome) /ALICE,ATLAS,CMS and LHCB Collaborations
The High-Luminosity Large Hadron Collider (HL-LHC) will operate at unprecedented luminosity, with substantial data boosts enhancing the search for new physics and precision measurements. This paper explores advancements in detector technology, novel search strategies, and cutting-edge analysis techniques aimed at maximizing the HL-LHC's physics potential. [...]
CMS-CR-2024-289.- Geneva : CERN, 2024 - 8 p. Fulltext: PDF;
In : 12th Edition of the Large Hadron Collider Physics Conference, Boston, Us, 3 - 7 Jun 2024

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2024-11-23
04:23
Search for flavour-changing neutral current couplings between the top quark and the Higgs boson in multilepton final states with the ATLAS detector / Wahdan, Shayma (Wuppertal U.)
These proceedings present a search for flavour-changing neutral-current (FCNC) interaction involving the top quark, Higgs boson and either the up or the charm quark, using 140 fb$^{-1}$ of 13 TeV proton--proton collision data from the ATLAS detector at the Large Hadron Collider. [...]
arXiv:2411.14026. -
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2024-11-15
15:58
Observation of top-quark pair production in lead-lead collisions at $\sqrt{s_\mathrm{NN}}=5.02$ TeV with the ATLAS detector / ATLAS Collaboration
Top-quark pair production is observed in lead-lead (Pb+Pb) collisions at $\sqrt{s_\mathrm{NN}}=5.02$ TeV at the Large Hadron Collider with the ATLAS detector. [...]
arXiv:2411.10186 ; CERN-EP-2024-282. - 2024 - 31.
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2024-11-15
12:00
Precision measurement of the $B^{0}$ meson lifetime using $B^{0} \rightarrow J/\psi K^{*0}$ decays with the ATLAS detector / ATLAS Collaboration
A measurement of the $B^{0}$ meson lifetime and related properties using $B^0 \to J/\psi K^{*0}$ decays in data from 13 TeV proton-proton collisions with an integrated luminosity of 140 fb$^{-1}$ recorded by the ATLAS detector at the LHC is presented. [...]
arXiv:2411.09962 ; CERN-EP-2024-279. - 2024 - 39.
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2024-11-14
14:52
Reconstruction and identification of pairs of collimated $\tau$-leptons decaying hadronically using $\sqrt{s}=13$ TeV $pp$ collision data with the ATLAS detector / ATLAS Collaboration
This paper describes an algorithm for reconstructing and identifying a highly collimated hadronically decaying $\tau$-lepton pair with low transverse momentum. [...]
arXiv:2411.09357 ; CERN-EP-2024-267. - 2024 - 49.
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2024-11-12
10:50
Search for vector-like leptons coupling to first- and second-generation Standard Model leptons in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector / ATLAS Collaboration
A search for pair production of vector-like leptons coupling to first- and second-generation Standard Model leptons is presented. [...]
arXiv:2411.07143 ; CERN-EP-2024-296. - 2024 - 58.
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2024-11-08
10:55
Photon production in top quark events at ATLAS and CMS / Ribeiro Lopes, Beatriz (CERN) /ATLAS and CMS Collaborations
Top quark production in association with a photon offers a unique test ground for the standard model predictions, as it is sensitive to the top-photon coupling. These processes are rare when compared to standard top pair production, however the large amounts of data delivered by the LHC open the window to precise measurements. [...]
CMS-CR-2024-256.- Geneva : CERN, 2024 - 7 p. Fulltext: PDF;
In : 17th International Workshop on Top Quark Physics, Saint Malo, Fr, 22 - 27 Sep 2024

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2024-11-08
04:22
Photon production in top quark events at ATLAS and CMS / Lopes, Beatriz Ribeiro (CERN)
Top quark production in association with a photon offers a unique test ground for the standard model predictions, as it is sensitive to the top-photon coupling. [...]
arXiv:2411.03981. - 7.
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2024-11-06
16:28
Search for a heavy charged Higgs boson decaying into a $W$ boson and a Higgs boson in final states with leptons and $b$-jets in $\sqrt{s} = 13$ TeV $pp$ collisions with the ATLAS detector / ATLAS Collaboration
This article presents a search for a heavy charged Higgs boson produced in association with a top quark and a bottom quark, and decaying into a $W$ boson and a $125$ GeV Higgs boson $h$. [...]
arXiv:2411.03969 ; CERN-EP-2024-290. - 2024 - 66.
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