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CERN Document Server 225 records found  1 - 10nextend  jump to record: Search took 0.63 seconds. 
1.
Combination of measurements of the top quark mass from data collected by the ATLAS and CMS experiments at $\sqrt{s}=7$ and 8 TeV / ATLAS Collaboration
A combination of fifteen top quark mass measurements performed by the ATLAS and CMS experiments at the LHC is presented. The data sets used correspond to an integrated luminosity of up to 5 and 20$^{-1}$ of proton-proton collisions at center-of-mass energies of 7 and 8 TeV, respectively. [...]
arXiv:2402.08713; CMS-TOP-22-001; ATLAS-TOPQ-2019-13; CERN-EP-2024-020.- 2024-06-27 - 37 p. - Published in : Phys. Rev. Lett. 132 (2024) 261902 Fulltext: 2402.08713 - PDF; 6937cc72640d896305c353aa4c9dc646 - PDF; Fulltext from Publisher: PDF; External links: Physics Synopsis; Fermilab Library Server
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2.
Search for the non-resonant production of Higgs boson pairs via gluon fusion and vector-boson fusion in the $b\bar{b}\tau^+\tau^-$ final state in proton-proton collisions at $\sqrt{s} = 13$ TeV with the ATLAS detector / ATLAS Collaboration
A search for the non-resonant production of Higgs boson pairs in the $HH\rightarrow b\bar{b}\tau^+\tau^-$ channel is performed using 140 fb$^{-1}$ of proton-proton collisions at a centre-of-mass energy of $13$ TeV recorded by the ATLAS detector at the CERN Large Hadron Collider. The analysis strategy is optimised to probe anomalous values of the Higgs boson self-coupling modifier $\kappa_\lambda$ and of the quartic $HHVV$ ($V = W,Z$) coupling modifier $\kappa_{2V}$. [...]
arXiv:2404.12660; CERN-EP-2024-091.- Geneva : CERN, 2024-08-01 - 35 p. - Published in : Phys. Rev. D 110 (2024) 032012 Fulltext: 2404.12660 - PDF; Publication - PDF; External link: Previous draft version
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3.
Search for high-mass resonances in final states with a $\tau$-lepton and missing transverse momentum with the ATLAS detector / ATLAS Collaboration
A search for high-mass resonances decaying into a tau-lepton and a neutrino using proton–proton collisions at a center-of-mass energy of $\sqrt{s}= 13$ TeV is presented. The full Run 2 data sample corresponding to an integrated luminosity of 139 fb$^{-1}$ recorded by the ATLAS experiment in the years 2015-2018 is analyzed. [...]
arXiv:2402.16576; CERN-EP-2023-298.- Geneva : CERN, 2024-06-01 - 28 p. - Published in : Phys. Rev. D 109 (2024) 112008 Fulltext: 2402.16576 - PDF; Publication - PDF; External link: Previous draft version
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4.
Studies of the Energy Dependence of Diboson Polarization Fractions and the Radiation-Amplitude-Zero Effect in <math display="inline"><mrow><mi>W</mi><mi>Z</mi></mrow></math> Production with the ATLAS Detector / ATLAS Collaboration
This Letter presents the first study of the energy-dependence of diboson polarization fractions in $WZ \rightarrow \ell\nu \ell'\ell'~(\ell, \ell'=e, \mu)$ production. The data set used corresponds to an integrated luminosity of 140 fb$^{-1}$ of proton-proton collisions at a center-of-mass energy of 13 TeV recorded by the ATLAS detector. [...]
arXiv:2402.16365; CERN-EP-2024-045.- Geneva : CERN, 2024-09-05 - 24 p. - Published in : Phys. Rev. Lett. Fulltext: 2402.16365 - PDF; Publication - PDF; External link: Previous draft version
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5.
A statistical combination of ATLAS Run 2 searches for charginos and neutralinos at the LHC / ATLAS Collaboration
Statistical combinations of searches for charginos and neutralinos using various decay channels are performed using $139\,$fb$^{-1}$ of $pp$ collision data at $\sqrt{s}=13\,$TeV with the ATLAS detector at the Large Hadron Collider. Searches targeting pure-wino chargino pair production, pure-wino chargino-neutralino production, or higgsino production decaying via Standard Model $W$, $Z$, or $h$ bosons are combined to extend the mass reach to the produced SUSY particles by 30-100 GeV. [...]
arXiv:2402.08347; CERN-EP-2024-018.- Geneva : CERN, 2024-07-19 - 21 p. - Published in : Phys. Rev. Lett. 133 (2024) 031802 Fulltext: PDF; External link: Previous draft version
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6.
Performance of the ATLAS forward proton Time-of-Flight detector in Run 2 / ATLAS Collaboration
We present performance studies of the Time-of-Flight (ToF) subdetector of the ATLAS Forward Proton (AFP) detector at the LHC. Efficiencies and resolutions are measured using high-statistics data samples collected at low and moderate pile-up in 2017, the first year when the detectors were installed on both sides of the interaction region. [...]
arXiv:2402.06438; CERN-EP-2024-004.- Geneva : CERN, 2024-05-21 - 50 p. - Published in : JINST 19 (2024) P05054 Fulltext: 2402.06438 - PDF; Publication - PDF; document - PDF; External link: Previous draft version
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7.
Determination of the Relative Sign of the Higgs Boson Couplings to <math display="inline"><mrow><mi>W</mi></mrow></math> and <math display="inline"><mi>Z</mi></math> Bosons Using <math display="inline"><mi>W</mi><mi>H</mi></math> Production via Vector-Boson Fusion with the ATLAS Detector / ATLAS Collaboration
The associated production of Higgs and $W$ bosons via vector-boson fusion (VBF) is highly sensitive to the relative sign of the Higgs boson couplings to $W$ and $Z$ bosons. In this Letter, two searches for this process are presented, using 140 fb$^{-1}$ of proton-proton collision data at $\sqrt{s}$ = 13 TeV recorded by the ATLAS detector at the LHC. [...]
arXiv:2402.00426; CERN-EP-2023-286.- Geneva : CERN, 2024-10-02 - 22 p. - Published in : Phys. Rev. Lett. 133 (2024) 141801 Fulltext: 2402.00426 - PDF; Publication - PDF; External link: Previous draft version
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8.
Search for pair production of higgsinos in events with two Higgs bosons and missing transverse momentum in $\sqrt{s}=13$ TeV $pp$ collisions at the ATLAS experiment / ATLAS Collaboration
This paper presents a search for pair production of higgsinos, the supersymmetric partners of the Higgs bosons, in scenarios with gauge-mediated supersymmetry breaking. Each higgsino is assumed to decay into a Higgs boson and a nearly massless gravitino. [...]
arXiv:2401.14922; CERN-EP-2023-278.- Geneva : CERN, 2024-06-01 - 54 p. - Published in : Phys. Rev. D 109 (2024) 112011 Fulltext: PDF; External link: Previous draft version
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9.
Search for nearly mass-degenerate higgsinos using low-momentum mildly-displaced tracks in $pp$ collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector / ATLAS Collaboration
Higgsinos with masses near the electroweak scale can solve the hierarchy problem and provide a dark matter candidate, while detecting them at the LHC remains challenging if their mass-splitting is $\mathcal{O}$(1 GeV). This Letter presents a novel search for nearly mass-degenerate higgsinos in events with an energetic jet, missing transverse momentum, and a low-momentum track with a significant transverse impact parameter using 140 fb$^{-1}$ of proton−proton collision data at $\sqrt{s}$ = 13 TeV collected by the ATLAS experiment. [...]
arXiv:2401.14046; CERN-EP-2024-012.- Geneva : CERN, 2024-05-30 - 24 p. - Published in : Phys. Rev. Lett. 132 (2024) 221801 Fulltext: 2401.14046 - PDF; Publication - PDF; External link: Previous draft version
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10.
The ATLAS Trigger System for LHC Run 3 and Trigger performance in 2022 / ATLAS Collaboration
The ATLAS trigger system is a crucial component of the ATLAS experiment at the LHC. It is responsible for selecting events in line with the ATLAS physics programme. [...]
arXiv:2401.06630; CERN-EP-2023-299.- Geneva : CERN, 2024-06-25 - 112 p. - Published in : JINST 19 (2024) P06029 Fulltext: 2401.06630 - PDF; Publication - PDF; document - PDF; External link: Previous draft version
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CERN Document Server : 225 records found   1 - 10nextend  jump to record:
See also: similar author names
71 Schaffer, A
60 Schaffer, A C
1 Schaffer, A M
2 Schaffer, A-C.
1 Schaffer, A.
1071 Schaffer, Arthur
8 Schaffer, Arthur Cornelius
1 Schäffer, Alexander
1 Schäffer, Ann-Kathrin
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