CERN Accelerating science

CERN Document Server 23 ჩანაწერია ნაპოვნი  1 - 10შემდეგიდასასრული  ჩანაწერთან გადასვლა: ძიებას დასჭირდა 1.22 წამი. 
1.
Constraints on dark matter models involving an $s$-channel mediator with the ATLAS detector in $pp$ collisions at $\sqrt{s} = 13$ TeV / ATLAS Collaboration
This paper reports a summary of searches for a fermionic dark matter candidate in the context of theoretical models characterised by a mediator particle exchange in the $s$-channel. The data sample considered consists of $pp$ collisions delivered by the Large Hadron Collider during its Run 2 at a centre-of-mass energy of $\sqrt{s} = 13$ TeV and recorded by the ATLAS detector, corresponding to up to 140 $fb^{-1}$. [...]
arXiv:2404.15930; CERN-EP-2024-102.- Geneva : CERN, 2024-10-24 - 55 p. - Published in : Eur. Phys. J. C 84 (2024) 1102 Fulltext: 2404.15930 - PDF; document - PDF; External link: Previous draft version
2.
Precise measurements of $W$- and $Z$-boson transverse momentum spectra with the ATLAS detector using $pp$ collisions at $\sqrt{s} = 5.02$ TeV and $13$ TeV / ATLAS Collaboration
This paper describes measurements of the transverse momentum spectra of $W$ and $Z$ bosons produced in proton-proton collisions at centre-of-mass energies of $\sqrt{s}=5.02$ TeV and $\sqrt{s}=13$ TeV with the ATLAS experiment at the Large Hadron Collider. Measurements are performed in the electron and muon channels, $W \to \ell\nu$ and $Z \to \ell\ell$ ($\ell=e$ or $\mu$), and for $W$ events further separated by charge. [...]
arXiv:2404.06204; CERN-EP-2024-080.- Geneva : CERN, 2024-10-30 - 85 p. - Published in : Eur. Phys. J. C 84 (2024) 1126 Fulltext: 2404.06204 - PDF; document - PDF; External link: Previous draft version
3.
Search for flavour-changing neutral-current couplings between the top quark and the Higgs boson in multi-lepton final states in 13 TeV $pp$ collisions with the ATLAS detector / ATLAS Collaboration
A search is presented for flavour-changing neutral-current interactions involving the top quark, the Higgs boson and an up-type quark ($q=u,c$) with the ATLAS detector at the Large Hadron Collider. The analysis considers leptonic decays of the top quark along with Higgs boson decays into two $W$ bosons, two $Z$ bosons or a $\tau^{+}\tau^{-}$ pair. [...]
arXiv:2404.02123; CERN-EP-2024-070; CERN-EP-2024-070.- Geneva : CERN, 2024-07-29 - 62 p. - Published in : Eur. Phys. J. C 84 (2024) 757 Fulltext: 2404.02123 - PDF; document - PDF; External link: Previous draft version
4.
Measurements of the production cross-section for a Z boson in association with b- or c-jets in proton–proton collisions at $\sqrt{s} = 13$ TeV with the ATLAS detector / ATLAS Collaboration
This paper presents a measurement of the production cross-section of a $Z$ boson in association with $b$- or $c$-jets, in proton-proton collisions at $\sqrt{s} = 13$ TeV with the ATLAS experiment at the Large Hadron Collider using data corresponding to an integrated luminosity of 140 fb$^{-1}$. Inclusive and differential cross-sections are measured for events containing a $Z$ boson decaying into electrons or muons and produced in association with at least one $b$-jet, at least one $c$-jet, or at least two $b$-jets with transverse momentum $p_\textrm{T} > 20$ GeV and rapidity $|y| < 2.5$. [...]
arXiv:2403.15093; CERN-EP-2024-081.- Geneva : CERN, 2024-09-27 - 60 p. - Published in : Eur. Phys. J. C 84 (2024) 984 Fulltext: 2403.15093 - PDF; document - PDF; External link: Previous draft version
5.
Measurement of the W-boson mass and width with the ATLAS detector using proton-proton collisions at $\sqrt{s}$ = 7 TeV / ATLAS Collaboration
Proton-proton data recorded by the ATLAS detector in 2011, at a centre-of-mass energy of 7 TeV, have been used for an improved determination of the W-boson mass and a first measurement of the W-boson width at the LHC. Recent fits to the proton parton distribution functions are incorporated in the measurement procedure and an improved statistical method is used to increase the measurement precision. [...]
arXiv:2403.15085; CERN-EP-2024-074.- Geneva : CERN, 2024-12-21 - 51 p. - Published in : Eur. Phys. J. C 84 (2024) 1309 Fulltext: ANA-STDM-2019-24-PAPER - PDF; 2403.15085 - PDF; document - PDF; External link: Previous draft version
6.
Fiducial and differential cross-section measurements of electroweak $W\gamma jj$ production in pp collisions at $\sqrt{s} = 13$ TeV with the ATLAS detector / ATLAS Collaboration
The observation of the electroweak production of a $W$ boson and a photon in association with two jets, using $pp$ collision data at the Large Hadron Collider at a centre of mass energy of $\sqrt{s}=13$ TeV, is reported. The data were recorded by the ATLAS experiment from 2015 to 2018 and correspond to an integrated luminosity of 140 fb$^{-1}$. [...]
arXiv:2403.02809; CERN-EP-2024-048.- Geneva : CERN, 2024-10-15 - 48 p. - Published in : Eur. Phys. J. C 84 (2024) 1064 Fulltext: 2403.02809 - PDF; document - PDF; External link: Previous draft version
7.
Precise test of lepton flavour universality in $W$-boson decays into muons and electrons in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector / ATLAS Collaboration
The ratio of branching ratios of the $W$ boson to muons and electrons, $R^{\mu/e}_W=B(W\rightarrow \mu\nu)/B(W\rightarrow e\nu)$, has been measured using 140 fb$^{-1}$ of $pp$ collision data at $\sqrt{s}=13$ TeV collected with the ATLAS detector at the LHC, probing the universality of lepton couplings. The ratio is obtained from measurements of the $t\bar{t}$ production cross-section in the $ee$, $e\mu$ and $\mu\mu$ dilepton final states. [...]
arXiv:2403.02133; CERN-EP-2024-063.- Geneva : CERN, 2024-10-01 - 33 p. - Published in : Eur. Phys. J. C 84 (2024) 993 Fulltext: document - PDF; 2403.02133 - PDF; Publication - PDF; External link: Previous draft version
8.
Search for short- and long-lived axion-like particles in $H\rightarrow a a \rightarrow 4\gamma$ decays with the ATLAS experiment at the LHC / ATLAS Collaboration
Presented is the search for anomalous Higgs boson decays into two axion-like particles (ALPs) using the full Run 2 data set of 140 fb$^{-1}$ of proton-proton collisions at a centre-of-mass energy of 13 TeV recorded by the ATLAS experiment. The ALPs are assumed to decay into two photons, providing sensitivity to recently proposed models that could explain the $(g-2)_\mu$ discrepancy. [...]
arXiv:2312.03306; CERN-EP-2023-202.- Geneva : CERN, 2024-07-26 - 31 p. - Published in : Eur. Phys. J. C 84 (2024) 742 Fulltext: 2312.03306 - PDF; Publication - PDF; External link: Previous draft version
9.
Search for light long-lived neutral particles from Higgs boson decays via vector-boson-fusion production from $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector / ATLAS Collaboration
A search is reported for long-lived dark photons with masses between 0.1 GeV and 15 GeV, from exotic decays of Higgs bosons produced via vector-boson-fusion. Events that contain displaced collimated Standard Model fermions reconstructed in the calorimeter or muon spectrometer are probed. [...]
arXiv:2311.18298; CERN-EP-2023-226.- Geneva : CERN, 2024-07-22 - 45 p. - Published in : Eur. Phys. J. C 84 (2024) 719 Fulltext: 2311.18298 - PDF; document - PDF; External link: Previous draft version
10.
Observation of quantum entanglement with top quarks at the ATLAS detector / ATLAS Collaboration
Entanglement is a key feature of quantum mechanics, with applications in fields such as metrology, cryptography, quantum information, and quantum computation. It has been observed in a wide variety of systems and length scales, ranging from the microscopic to the macroscopic. [...]
arXiv:2311.07288; CERN-EP-2023-230.- 2024-09-18 - 49 p. - Published in : Nature 633 (2024) 542 Fulltext: ANA-TOPQ-2021-24-PAPER - PDF; 2311.07288 - PDF; document - PDF; External link: Interactions.org article

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