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Advanced Search Results For "Nielsen AL"

1 - 10 of 1,866 results for
 "Nielsen AL"
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The ATLAS inner detector trigger performance in pp collisions at 13 TeV during LHC Run 2

Publication Type:Academic Journal

Source(s):European Physical Journal C: Particles and Fields, Vol 82, Iss 3, Pp 1-57 (2022)

Abstract:Abstract The design and performance of the inner detector trigger for the high level trigger of the ATLAS experiment at the Large Hadron Collider during the 2016–2018 data taking period is discussed. In 2016, 2017, and 2018 the ATLAS detector recorded ...

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Search for Higgs bosons decaying into new spin-0 or spin-1 particles in four-lepton final states with the ATLAS detector with 139 fb −1 of pp collision data at s $$ \sqrt{s} $$ = 13 TeV

Publication Type:Academic Journal

Source(s):Journal of High Energy Physics, Vol 2022, Iss 3, Pp 1-64 (2022)

Abstract:Abstract Searches are conducted for new spin-0 or spin-1 bosons using events where a Higgs boson with mass 125 GeV decays into four leptons (ℓ = e, μ). This decay is presumed to occur via an intermediate state which contains two on-shell, promptly deca...

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Measurement of the energy response of the ATLAS calorimeter to charged pions from $$W^{\pm }\rightarrow \tau ^{\pm }(\rightarrow \pi ^{\pm }\nu _{\tau })\nu _{\tau }$$ W ± → τ ± ( → π ± ν τ ) ν τ events in Run 2 data

Publication Type:Academic Journal

Source(s):European Physical Journal C: Particles and Fields, Vol 82, Iss 3, Pp 1-31 (2022)

Abstract:Abstract The energy response of the ATLAS calorimeter is measured for single charged pions with transverse momentum in the range $$10

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Observation of electroweak production of two jets in association with an isolated photon and missing transverse momentum, and search for a Higgs boson decaying into invisible particles at 13 $$\text {TeV}$$ TeV with the ATLAS detector

Publication Type:Academic Journal

Source(s):European Physical Journal C: Particles and Fields, Vol 82, Iss 2, Pp 1-41 (2022)

Abstract:Abstract This paper presents a measurement of the electroweak production of two jets in association with a $$Z\gamma $$ Z γ pair, with the Z boson decaying into two neutrinos. It also presents a search for invisible or partially invisible decays of a H...

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Hospital admission for COVID-19 pneumonitis – long-term impairment in quality of life and lung function

Publication Type:Academic Journal

Source(s):European Clinical Respiratory Journal, Vol 9, Iss 1 (2022)

Abstract:Background and Aim Knowledge of long-term consequences of severe COVID-19 pneumonitis is of outmost importance. Our aim was, therefore, to assess the long-term impact on quality of life and lung function in adults hospitalized with severe COVID-19. Met...

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Performance of the ATLAS Level-1 topological trigger in Run 2

Publication Type:Academic Journal

Source(s):European Physical Journal C: Particles and Fields, Vol 82, Iss 1, Pp 1-26 (2022)

Abstract:Abstract During LHC Run 2 (2015–2018) the ATLAS Level-1 topological trigger allowed efficient data-taking by the ATLAS experiment at luminosities up to 2.1 $$\times $$ × 10 $$^{34}$$ 34 cm $$^{-2}$$ - 2 s $$^{-1}$$ - 1 , which exceeds the design value ...

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Search for exotic decays of the Higgs boson into b b ¯ $$ \overline{b} $$ and missing transverse momentum in pp collisions at s $$ \sqrt{s} $$ = 13 TeV with the ATLAS detector

Publication Type:Academic Journal

Source(s):Journal of High Energy Physics, Vol 2022, Iss 1, Pp 1-38 (2022)

Abstract:Abstract A search for the exotic decay of the Higgs boson (H) into a b b ¯ $$ \overline{b} $$ resonance plus missing transverse momentum is described. The search is performed with the ATLAS detector at the Large Hadron Collider using 139 fb −1 of pp co...

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Measurement of the c-jet mistagging efficiency in $$t\bar{t}$$ t t ¯ events using pp collision data at $$\sqrt{s}=13$$ s = 13 $$\text {TeV}$$ TeV collected with the ATLAS detector

Publication Type:Academic Journal

Source(s):European Physical Journal C: Particles and Fields, Vol 82, Iss 1, Pp 1-27 (2022)

Abstract:Abstract A technique is presented to measure the efficiency with which c-jets are mistagged as b-jets (mistagging efficiency) using $$t\bar{t}$$ t t ¯ events, where one of the W bosons decays into an electron or muon and a neutrino and the other decays...

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Configuration and performance of the ATLAS b-jet triggers in Run 2

Publication Type:Academic Journal

Source(s):European Physical Journal C: Particles and Fields, Vol 81, Iss 12, Pp 1-45 (2021)

Abstract:Abstract Several improvements to the ATLAS triggers used to identify jets containing b-hadrons (b-jets) were implemented for data-taking during Run 2 of the Large Hadron Collider from 2016 to 2018. These changes include reconfiguring the b-jet trigger ...

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Search for chargino–neutralino pair production in final states with three leptons and missing transverse momentum in $$\sqrt{s} = 13$$ s = 13 TeV pp collisions with the ATLAS detector

Publication Type:Academic Journal

Source(s):European Physical Journal C: Particles and Fields, Vol 81, Iss 12, Pp 1-55 (2021)

Abstract:Abstract A search for chargino–neutralino pair production in three-lepton final states with missing transverse momentum is presented. The study is based on a dataset of $$\sqrt{s} = 13$$ s = 13 TeV pp collisions recorded with the ATLAS detector at the ...

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