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ATLAS Notes

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2023-09-21
09:03
Use of a Normalizing Flow model for generating Drell-Yan events in the ATLAS collaboration at the LHC / Fitzhugh, Peter Michael (Université Paris-Saclay (FR)) ; Ju, Xiangyang (Lawrence Berkeley National Lab. (US)) ; Nikolaidou, Rosy (Université Paris-Saclay (FR))
The search for the dimuon decay of the Standard Model (SM) Higgs boson represents a typical bump-hunting physics analysis performed at the Large Hadron Collider (LHC). [...]
ATL-SOFT-PROC-2023-037. - 2023. - 6 p.
Original Communication (restricted to ATLAS) - Full text

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2023-09-21
08:25
Faster simulated track reconstruction in the ATLAS Fast Chain / Leight, William Axel (University of Massachusetts (US)) ; Tsai, Fang-Ying (Stony Brook University (US)) ; Javurkova, Martina (University of Massachusetts (US)) ; Golling, Tobias (Universite de Geneve (CH)) ; Chapman, John Derek (University of Cambridge (GB)) ; Sengupta, Debajyoti (Universite de Geneve (CH))
The production of simulated datasets for use by physics analyses consumes a large fraction of ATLAS computing resources, a problem that will only get worse as increases in the instantaneous luminosity provided by the LHC lead to more collisions per bunch crossing (pile-up). [...]
ATL-SOFT-PROC-2023-036. - 2023. - 7 p.
Original Communication (restricted to ATLAS) - Full text

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2023-09-20
06:15
ATLAS Virtual Visits: Bringing the World to our Detector / Le Boulicaut, Elise Maria (Duke University (US))
The Virtual Visit service run by the ATLAS Collaboration at CERN has been active since 2010. [...]
ATL-OREACH-PROC-2023-003. - 2023. - 5 p.
Original Communication (restricted to ATLAS) - Full text

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2023-09-19
19:44
Inclusive $W^{\pm}$ and $Z^{0}$ cross sections at next-to-next-to leading order QCD for the ATLAS experiment
This note presents the evaluation of the cross sections for the production of single electroweak vector bosons ($W$, $Z/\gamma^{*}$) in proton--proton collisions using state-of-the-art calculations for use in the ATLAS experiment at the Large Hadron Collider. [...]
ATL-PHYS-PUB-2023-026. - 2023.
Original Communication (restricted to ATLAS) - Full text

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2023-09-19
17:25
Multithreading ATLAS offline software: a retrospective / Krasznahorkay, Attila (CERN) ; Leggett, Charles (Lawrence Berkeley National Lab. (US)) ; Mete, Alaettin Serhan (Argonne National Laboratory (US)) ; Snyder, Scott (Brookhaven National Laboratory (US)) ; Tsulaia, Vakhtang (Lawrence Berkeley National Lab. (US)) ; Winklmeier, Frank (University of Oregon (US))
For Run 3, ATLAS redesigned its offline software, Athena, so that the main workflows run completely multithreaded. [...]
ATL-SOFT-PROC-2023-035. - 2023. - 8 p.
Original Communication (restricted to ATLAS) - Full text

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2023-09-19
17:24
BigPanDA monitoring system evolution in the ATLAS experiment / Korchuganova, Tatiana (University of Pittsburgh (US)) ; Klimentov, Alexei (Brookhaven National Laboratory (US)) ; Alekseev, Aleksandr (University of Texas at Arlington (UTA)) ; Wenaus, Torre (Brookhaven National Laboratory (US)) ; Yang, Zhaoyu (Brookhaven National Laboratory (US))
Monitoring services play a crucial role in the day-to-day operation of distributed computing systems. [...]
ATL-SOFT-PROC-2023-034. - 2023. - 8 p.
Original Communication (restricted to ATLAS) - Full text

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2023-09-19
17:23
S3 Gateway / Hanushevsky, Andrew Bohdan (SLAC National Accelerator Laboratory (US))
The S3 Gateway is a server based application that provides a bridge between protocols and security used in the HEP community to S3 protocols and its associated security model [...]
ATL-SOFT-PROC-2023-033. - 2023. - 3 p.
Original Communication (restricted to ATLAS) - Full text

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2023-09-19
15:51
The ATLAS Event Picking Service and its evolution / ATLAS Collaboration
The EventIndex is the complete catalogue of all ATLAS real and simulated events, keeping the references to all permanent files that contain a given event in any processing stage; its implementation has been substantially revised in advance of LHC Run 3 to be able to scale to the higher production rates. [...]
ATL-SOFT-PROC-2023-032. - 2023. - 5 p.
Original Communication (restricted to ATLAS) - Full text

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2023-09-19
14:38
Jet radius dependence of dijet momentum balance in Pb+Pb collisions at 5.02 TeV with the ATLAS detector
This note describes a measurement of the jet radius dependence of the momentum balance between leading back-to-back dijets in 1.7~\inb\ of Pb+Pb collisions collected in 2018 and 260~\ipb\ of pp collisions collected in 2017 by the ATLAS detector at the LHC. [...]
ATLAS-CONF-2023-060. - 2023. - 27 p.
Original Communication (restricted to ATLAS) - Full text

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2023-09-19
14:37
Charged-hadron yield measurements in photo-nuclear collisions using 5.02 TeV Pb+Pb data with ATLAS
This note presents the analysis of charged-hadron measurements in photo-nuclear collisions using 1.73 $\mathrm{nb^{-1}}$ of 5.02 TeV Pb+Pb data collected in 2018 by ATLAS. [...]
ATLAS-CONF-2023-059. - 2023.
Original Communication (restricted to ATLAS) - Full text

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ATLAS Conference Contributions (5,345)
ATLAS PUB Notes (2,995)
ATLAS Conference Notes (1,239)