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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
This paper presents a measurement of quantities related to the formation of jets from high-energy quarks and gluons (fragmentation). Jets with transverse momentum 100 GeV <pT<2.5 TeV and pseudorapidity |η|<2.1 from an ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
This paper describes the reconstruction of electrons and photons with the ATLAS detector, employed for measurements and searches exploiting the complete LHC Run 2 dataset. An improved energy clustering algorithm is introduced, ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
The algorithms used by the ATLAS Collaboration during Run 2 of the Large Hadron Collider to identify jets containing b-hadrons are presented. The performance of the algorithms is evaluated in the simulation and the efficiency ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
The result of a search for the pair production of the lightest supersymmetric partner of the bottom quark (˜b1) using 139 fb−1 of proton-proton data collected at √ s = 13 TeV by the ATLAS detector is reported. In the ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
Measurements of K0S and Λ0 production in tt¯ final states have been performed. They are based on a data sample with integrated luminosity of 4.6 fb−1 from proton–proton collisions at a centre-of-mass energy of 7 TeV, ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
The problems of neutrino masses, matter-antimatter asymmetry, and dark matter could be successfully addressed by postulating right-handed neutrinos with Majorana masses below the electroweak scale. In this work, leptonic ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
To assess the properties of the quark–gluon plasma formed in ultrarelativistic ion collisions, the ATLAS experiment at the LHC measures a correlation between the mean transverse momentum and the flow harmonics. The analysis ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
The momentum measurement capability of the ATLAS muon spectrometer relies fundamentally on the intrinsic single-hit spatial resolution of the monitored drift tube precision tracking chambers. Optimal resolution is achieved ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)