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ATLAS Preprints

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2019-08-22
22:53
Search for flavour-changing neutral currents in processes with one top quark and a photon using 81 fb$^{-1}$ of $pp$ collisions at $\sqrt{s} = 13$ TeV with the ATLAS experiment
A search for flavour-changing neutral current (FCNC) events via the coupling of a top quark, a photon, and an up or charm quark is presented using 81 fb$^{-1}$ of proton-proton collision data taken at a centre-of-mass energy of 13 TeV with the ATLAS detector at the LHC. [...]
CERN-EP-2019-155. - 2019.
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2019-08-22
17:32
Search for electroweak production of charginos and sleptons decaying into final states with two leptons and missing transverse momentum in $\sqrt{s}=13$ TeV $pp$ collisions using the ATLAS detector
A search for the electroweak production of charginos and sleptons decaying into final states with two electrons or muons is presented. [...]
CERN-EP-2019-106. - 2019.
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2019-08-20
19:31
Measurements of top-quark pair differential and double-differential cross-sections in the $\ell$+jets channel with $pp$ collisions at $\sqrt{s}=13$ TeV using the ATLAS detector / ATLAS Collaboration
Single- and double-differential cross-section measurements are presented for the production of top-quark pairs, in the lepton + jets channel at particle and parton level. [...]
arXiv:1908.07305 ; CERN-EP-2019-149. - 2019. - 117 p.
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2019-08-20
19:21
Search for non-resonant Higgs boson pair production in the $bb\ell\nu\ell\nu$ final state with the ATLAS detector in $pp$ collisions at $\sqrt{s} = 13$ TeV
A search for non-resonant Higgs boson pair production, as predicted by the Standard Model, is presented, where one of the Higgs bosons decays via the $H\rightarrow bb$ channel and the other via one of the $H \rightarrow WW^*/ZZ^*/\tau\tau$ channels. [...]
CERN-EP-2019-143 ; arXiv:1908.06765. - 2019. - 38 p.
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2019-08-14
22:36
Measurement of angular and momentum distributions of charged particles within and around jets in Pb+Pb and $pp$ collisions at $\sqrt{s_{\mathrm{NN}}} = 5.02$ TeV with the ATLAS detector / ATLAS Collaboration
Studies of the fragmentation of jets into charged particles in heavy-ion collisions can provide information about the mechanism of jet-quenching by the hot and dense QCD matter created in such collisions, the quark-gluon plasma. [...]
arXiv:1908.05264 ; CERN-EP-2019-158. - 2019. - 43 p.
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2019-08-09
10:45
Search for bottom-squark pair production with the ATLAS detector in final states containing Higgs bosons, $b$-jets and missing transverse momentum / ATLAS Collaboration
The result of a search for the pair production of the lightest supersymmetric partner of the bottom quark ($\tilde{b}_{1}$) using 139 fb$^{-1}$ of proton-proton data collected at $\sqrt{s} = 13$ TeV by the ATLAS detector is reported. [...]
arXiv:1908.03122 ; CERN-EP-2019-142. - 2019. - 47 p.
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2019-08-07
22:47
Measurement of the inclusive isolated-photon cross section in $pp$ collisions at $\sqrt{s}=13$ TeV using 36 fb$^{-1}$ of ATLAS data / ATLAS Collaboration
The differential cross section for isolated-photon production in $pp$ collisions is measured at a centre-of-mass energy of 13 TeV with the ATLAS detector at the LHC using an integrated luminosity of 36.1 fb$^{-1}$. [...]
arXiv:1908.02746 ; CERN-EP-2019-136. - 2019. - 49 p.
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2019-08-06
10:30
Generation and Simulation of R-Hadrons in the ATLAS Experiment
This note details the generation and simulation of metastable, long-lived particles with colour charge. [...]
ATL-PHYS-PUB-2019-019. - 2019. - 19 p.
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2019-08-01
09:32
Electron and photon performance measurements with the ATLAS detector using the 2015-2017 LHC proton-proton collision data / ATLAS Collaboration
This paper describes the reconstruction of electrons and photons with the ATLAS detector, as employed for measurements and searches exploiting the complete LHC Run 2 dataset. [...]
arXiv:1908.00005 ; CERN-EP-2019-145. - 2019. - 70 p.
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2019-07-31
06:17
Higgs couplings in ATLAS at Run2 / Gray, Heather M. (UC, Berkeley)
Since the discovery of the Higgs boson in summer 2012, the understanding of its properties has been a high priority of the ATLAS physics program. [...]
arXiv:1907.06297. - 7 p.
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