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CERN Document Server Намерени са 2,046 записа  1 - 10следващкрай  отиване на запис: Търсенето отне 0.20 секунди. 
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Overview and progress on the Laser Interferometer Space Antenna mission / Bayle, Jean-Baptiste (Glasgow U.) ; Bonga, Béatrice (Nijmegen U.) ; Caprini, Chiara (Geneva U. ; CERN) ; Doneva, Daniela (U. Tubingen ; Sofiya, Inst. Nucl. Res.) ; Muratore, Martina (Potsdam, Max Planck Inst. ; Trento U. ; INFN, Trento) ; Petiteau, Antoine (APC, Paris) ; Rossi, Elena (Leiden Observ.) ; Shao, Lijing (Peking U., Beijing, KIAA ; NAOC, Beijing)
At a Lorentz Center workshop, Chiara Caprini, Antoine Petiteau and Elena Maria Rossi gave a series of presentations about the Laser Interferometer Space Antenna (LISA) mission, the instrument, and the associated science in cosmology and astrophysics..
2022 - 5 p. - Published in : Nature Astron. 6 (2022) 1334-1338
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The second data release from the European Pulsar Timing Array - IV. Implications for massive black holes, dark matter, and the early Universe / EPTA Collaboration
The European Pulsar Timing Array (EPTA) and Indian Pulsar Timing Array (InPTA) collaborations have measured a low-frequency common signal in the combination of their second and first data releases respectively, with the correlation properties of a gravitational wave background (GWB). Such signal may have its origin in a number of physical processes including a cosmic population of inspiralling supermassive black hole binaries (SMBHBs); inflation, phase transitions, cosmic strings and tensor mode generation by non-linear evolution of scalar perturbations in the early Universe; oscillations of the Galactic potential in the presence of ultra-light dark matter (ULDM). [...]
arXiv:2306.16227.- 2024-05-01 - 30 p. - Published in : Astron. Astrophys. 685 (2024) A94 Fulltext: document - PDF; 2306.16227 - PDF;
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Measurement of the background in the CMS muon detector in ${p}{p}$-collisions at $\sqrt{s} = 13$ $\,\text {Te}\hspace{-.08em}\text {V}$ / CMS Muon Collaboration
The CMS detector, including its muon system, has been operating at the CERN LHC in increasingly challenging conditions for about 15 years. The muon detector was designed to provide excellent triggering and track reconstruction for muons produced in proton–proton collisons at an instantaneous luminosity ($\mathcal {L}$) of $1 \times 10^{34}$ cm$^{-2}$s$^{-1}$. [...]
2024 - 43 p. - Published in : Eur. Phys. J. C 84 (2024) 955 Fulltext: PDF;
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Strong evidence for the discovery of a gravitational wave background / Caprini, Chiara (CERN ; Geneva U.)
In 2023, pulsar timing arrays announced what could become the first ever discovery of a stochastic gravitational wave background: the random superposition of gravitational waves permeating the cosmos — a vestige of cosmic processes in the Universe. Upcoming datasets are expected to confirm the discovery and provide insight into the origin of this signal..
2024 - 3 p. - Published in : 10.1038/s42254-024-00711-6
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A precise determination of the strong-coupling constant from the recoil of $Z$ bosons with the ATLAS experiment at $\sqrt{s} = 8$ TeV / ATLAS Collaboration
The coupling constant of the strong force is determined from the transverse-momentum distribution of $Z$ bosons produced in 8 TeV proton-proton collisions at the LHC and recorded by the ATLAS experiment. [...]
arXiv:2309.12986. - 43.
Interactions.org article - Fulltext
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Measurement of the Z boson invisible width at $\sqrt{s}=13$ TeV with the ATLAS detector / ATLAS Collaboration
A measurement of the invisible width of the $Z$ boson using events with jets and missing transverse momentum is presented using 37 $\mbox{fb\(^{-1}\)}$ of 13 TeV proton-proton data collected by the ATLAS detector in 2015 and 2016. The ratio of $Z\rightarrow \textrm{inv}$ to $Z\rightarrow\ell\ell$ events, where inv refers to non-detected particles and $\ell$ is either an electron or a muon, is measured and corrected for detector effects. [...]
arXiv:2312.02789; CERN-EP-2023-232.- Geneva : CERN, 2024-05-10 - 25 p. - Published in : Phys. Lett. B 854 (2024) 138705 Fulltext: 2312.02789 - PDF; Publication - PDF; External link: Previous draft version
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Operation and performance of the ATLAS tile calorimeter in LHC Run 2 / ATLAS Collaboration
The ATLAS tile calorimeter (TileCal) is the hadronic sampling calorimeter covering the central region of the ATLAS detector at the Large Hadron Collider (LHC). [...]
arXiv:2401.16034 ; CERN-EP-2023-266. - 2024 - 77.
Fulltext - Previous draft version - Fulltext
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Measurement of the Higgs boson mass with $H \rightarrow \gamma\gamma$ decays in 140 fb$^{-1}$ of $\sqrt{s}=13$ TeV $pp$ collisions with the ATLAS detector / ATLAS Collaboration
The mass of the Higgs boson is measured in the $H\to\gamma\gamma$ decay channel, exploiting the high resolution of the invariant mass of photon pairs reconstructed from the decays of Higgs bosons produced in proton-proton collisions at a centre-of-mass energy $\sqrt{s}=13$ TeV. The dataset was collected between 2015 and 2018 by the ATLAS detector at the Large Hadron Collider, and corresponds to an integrated luminosity of 140 fb$^{-1}$. [...]
arXiv:2308.07216; CERN-EP-2023-160.- Geneva : CERN, 2023-11-10 - 23 p. - Published in : Phys. Lett. B 847 (2023) 138315 Fulltext: 2308.07216 - PDF; Publication - PDF; External link: Previous draft version
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Measurement of the $t\bar{t}$ cross section and its ratio to the $Z$ production cross section using $pp$ collisions at $\sqrt{s} = 13.6$ TeV with the ATLAS detector / ATLAS Collaboration
The inclusive top-quark-pair production cross section $\sigma_{t\bar{t}}$ and its ratio to the $Z$-boson production cross section have been measured in proton-proton collisions at $\sqrt{s} = 13.6$ TeV, using 29 fb${}^{-1}$ of data collected in 2022 with the ATLAS experiment at the Large Hadron Collider. Using events with an opposite-charge electron-muon pair and $b$-tagged jets, and assuming Standard Model decays, the top-quark-pair production cross section is measured to be $\sigma_{t\bar{t}} = 850 \pm 3\mathrm{(stat.)}\pm 18\mathrm{(syst.)}\pm 20\mathrm{(lumi.)}$ pb. [...]
arXiv:2308.09529; CERN-EP-2023-166.- Geneva : CERN, 2023-12-07 - 41 p. - Published in : Phys. Lett. B 848 (2024) 138376 Fulltext: 2308.09529 - PDF; Publication - PDF; External link: Previous draft version
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Search for a new scalar decaying into new spin-1 bosons in four-lepton final states with the ATLAS detector / ATLAS Collaboration
A search is conducted for a new scalar boson $S$, with a mass distinct from that of the Higgs boson, decaying into four leptons ($\ell =$ $e$, $\mu$) via an intermediate state containing two on-shell, promptly decaying new spin-1 bosons $Z_\text{d}$: $S \rightarrow Z_\text{d}Z_\text{d} \rightarrow 4\ell$, where the $Z_\text{d}$ boson has a mass between 15 and 300 GeV, and the $S$ boson has a mass between either 30 and 115 GeV or 130 and 800 GeV. [...]
arXiv:2410.16781 ; CERN-EP-2024-248. - 2024 - 35.
Fulltext - Previous draft version - Fulltext
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