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ATLAS Preprints

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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. -
Fulltext

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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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2024-11-04
17:45
LFV and related rare decays at ATLAS and CMS / Huwiler, Marc (Zurich U.) /ATLAS and CMS Collaborations
Charged Lepton Flavour Conservation and Lepton Flavour Universality are observed symmetries of the Standard Model (SM) of particle physics, with no underlying theoretical principle enforcing them. Lepton Flavour Violation (LFV) is observed in the neutrino sector, through the spontaneous oscillation of neutrinos between the three flavour families. [...]
CMS-CR-2024-265.- Geneva : CERN, 2024 - 10 p. Fulltext: PDF;
In : 12th Edition of the Large Hadron Collider Physics Conference, Boston, Us, 3 - 7 Jun 2024

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2024-11-04
17:45
Prompt searches for feebly interacting particles at the LHC / Knolle, Joscha (Gent U.) /ATLAS and CMS Collaborations
Recent results from the ATLAS and CMS experiments in searches for prompt signatures of feebly interacting particles are presented. All presented results are based on the $2015{-}2018$ data set of $13\,\mathrm{TeV}$ proton-proton collisions, corresponding to an integrated luminosity of about $140\,\mathrm{fb}^{-1}$. [...]
CMS-CR-2024-245.- Geneva : CERN, 2024 - 9 p. Fulltext: PDF;
In : 12th Edition of the Large Hadron Collider Physics Conference, Boston, Us, 3 - 7 Jun 2024

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