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ATLAS Preprints

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2020-05-26
09:05
Search for Higgs boson decays into two new low-mass spin-0 particles in the 4$b$ channel with the ATLAS detector using $pp$ collisions at $\sqrt{s}=13$ TeV
This paper describes a search for beyond the Standard Model decays of the Higgs boson into a pair of new spin-0 particles subsequently decaying into $b$-quark pairs, $H \rightarrow aa \rightarrow (b\bar{b})(b\bar{b})$, using proton-proton collision data collected by the ATLAS detector at the Large Hadron Collider at center-of-mass energy $\sqrt{s}=13$ TeV. [...]
CERN-EP-2020-067. - 2020.
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2020-05-20
08:15
Performance of the missing transverse momentum triggers for the ATLAS detector during Run-2 data taking / ATLAS Collaboration
The factor of four increase in the LHC luminosity, from $0.5\times 10^{34}\,\textrm{cm}^{-2}\textrm{s}^{-1}$ to $2.0\times 10^{34}\textrm{cm}^{-2}\textrm{s}^{-1}$, and the corresponding increase in pile-up collisions during the 2015-2018 data-taking period, presented a challenge for ATLAS to trigger on missing transverse momentum. [...]
arXiv:2005.09554 ; CERN-EP-2020-050. - 2020. - 53 p.
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2020-05-12
17:43
The ATLAS Publication Process Supported by Continuous Integration and Web Framework / Malek, Fairouz (Centre National de la Recherche Scientifique (FR)) ; Araque Espinosa, Juan Pedro (Laboratorio de Instrumenta\c{c}\~ao e Fisica Experimental de Particulas - LIP, Lisbon) ; Baldi Levcovitz, Gabriel (Universidade Federal do Rio De Janeiro, COPPE/EE/IF) ; Bianchi, Riccardo Maria (University of Pittsburgh (US)) ; Brock, Ian (University of Bonn (DE)) ; Carli, Tancredi (CERN) ; Castro, Nuno Filipe (LIP Laboratorio de Instrumentacao e Fisica Experimental de Particulas (PT)) ; Ciocio, Alessandra (Lawrence Berkeley National Lab. (US)) ; Colautti, Maurizio (Universita degli Studi di Udine (IT)) ; Da Silva Menezes, Ana Carolina (Universidade Federal do Rio De Janeiro, COPPE/EE/IF) et al.
The ATLAS Collaboration defines methods, establishes procedures and organizes advisory groups to manage the publication processes of scientific papers, conference papers and public notes. [...]
arXiv:2005.06989 ; CERN-OPEN-2020-007 ; ATL-COM-GEN-2019-006. - 2020. - 41 p.
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2020-05-11
23:04
A search for the $Z\gamma$ decay mode of the Higgs boson in $pp$ collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector / ATLAS Collaboration
A search for the $Z\gamma$ decay of the Higgs boson, with $Z$ boson decays into pairs of electrons or muons is presented. [...]
arXiv:2005.05382 ; CERN-EP-2020-052. - 2020. - 37 p.
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2020-05-11
17:20
Search for $t\bar{t}$ resonances in fully hadronic final states in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector / ATLAS Collaboration
This paper presents a search for new heavy particles decaying into a pair of top quarks using 139 fb$^{-1}$ of proton$-$proton collision data recorded at a centre-of-mass energy of $\sqrt{s}=13$ TeV with the ATLAS detector at the Large Hadron Collider. [...]
arXiv:2005.05138 ; CERN-EP-2020-055. - 2020. - 40 p.
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2020-05-10
12:06
Performance of the upgraded PreProcessor of the ATLAS Level-1 Calorimeter Trigger / ATLAS Collaboration
The PreProcessor of the ATLAS Level-1 Calorimeter Trigger prepares the analogue trigger signals sent from the ATLAS calorimeters by digitising, synchronising and calibrating them to reconstruct transverse energy deposits, which are then used in further processing to identify event features. [...]
arXiv:2005.04179 ; CERN-EP-2020-042. - 2020. - 49 p.
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2020-05-06
22:38
Dijet resonance search with weak supervision using $\sqrt{s}=13$ TeV $pp$ collisions in the ATLAS detector / ATLAS Collaboration
This Letter describes a search for resonant new physics using a machine-learning anomaly detection procedure that does not rely on a signal model hypothesis. [...]
arXiv:2005.02983 ; CERN-EP-2020-062. - 2020. - 32 p.
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2020-05-05
04:37
Measurements of Single Event Upset in ATLAS IBL / Balbi, G. (INFN, Bologna) ; Barbero, M. (Bonn U. ; Marseille, CPPM) ; Beccherle, R. (INFN, Genoa ; INFN, Pisa) ; Bindi, M. (Gottingen U., II. Phys. Inst.) ; Breugnon, P. (Marseille, CPPM) ; Butti, P. (CERN ; SLAC) ; Cinca, D. (Dortmund U.) ; Dickinson, J. (LBL, Berkeley) ; Ferrere, D. (Geneva U.) ; Fougeron, D. (Marseille, CPPM) et al.
Effects of Single Event Upsets (SEU) and Single Event Transients (SET) are studied in the FE-I4B chip of the innermost layer of the ATLAS pixel system. [...]
arXiv:2004.14116. - 30 p.
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2020-04-30
13:01
Search for heavy diboson resonances in semileptonic final states in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector / ATLAS Collaboration
This paper reports on a search for heavy resonances decaying into $WW$, $ZZ$ or $WZ$ using proton$-$proton collision data at a centre-of-mass energy of $\sqrt{s}=13$ TeV. [...]
arXiv:2004.14636 ; CERN-EP-2020-049. - 2020. - 50 p.
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2020-04-29
17:19
Search for a scalar partner of the top quark in the all-hadronic $t\bar{t}$ plus missing transverse momentum final state at $\sqrt{s}$=13 TeV with the ATLAS detector / ATLAS Collaboration
A search for direct pair production of scalar partners of the top quark (top squarks or scalar third-generation up-type leptoquarks) in the all-hadronic $t\bar{t}$ plus missing transverse momentum final state is presented. [...]
arXiv:2004.14060 ; CERN-EP-2020-044. - 2020. - 65 p.
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