ATLAS is one of the four big experiments at CERN that exploits the full potential of discovery provided by the large hadron collider - LHC. The LIP Portuguese group signed the Letter of Intent of ATLAS and had a significant role in the design, construction, start-up of operations, trigger and data acquisition systems. The main contributions were to the hadronic calorimeter TileCal, to the forward detectors, and to the software development for jet trigger signatures. The group is contributing to detector performance studies and physics data analyses since the very first data provided by the LHC. In parallel, the group is strongly involved in the ATLAS upgrade efforts in view of operating during the High-Luminosity LHC phase, developing work mostly in TileCal, Trigger and the High Granularity Timing Detector (HGTD).
The ATLAS Portuguese group contributed to the discovery of the Higgs boson and is currently studying its properties. The group is a reference in the studies of the top quark and exploits this expertise in the search for physics beyond the standard model. It is also leader in exotics states studies. Last but not the least, the group is involved in the Heavy Ion program of the LHC, contributing to the study of the quark-gluon plasma (QGP), the state of matter that has occurred just after the Big Bang.
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Search for direct production of winos and higgsinos in events with two same-sign or three leptons in pp collision data at sqrt(s)=13 TeV with the ATLAS detector
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Author(s): ATLAS Collaboration (H. Santos et al.)
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Submission: 2022-09-06, Acceptance: , Publication: 2023-09-08
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Reference: ATLAS-CONF-2023-057
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Performance studies of tracking-based triggering using a fast emulation
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Author(s): A. L. Carvalho, R. Gonçalo, et. al. (ATLAS Collaboration)
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Submission: 2023-02-07, Acceptance: , Publication: 2023-02-07
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Reference: ATL-DAQ-PUB-2023-001
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Upgrade of the ATLAS Tile Calorimeter High Voltage System
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Author(s): Tiago Prates da Costa
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Submission: 2022-11-13, Acceptance: 2022-11-13, Publication: 2022-11-13
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Reference: LIP-STUDENTS-22-24
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Measurement of the polarisation of single top quarks and antiquarks produced in the t-channel at root s=13 TeV and bounds on the tWb dipole operator from the ATLAS experiment
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Author(s): ATLAS Collaboration (2887 authors)
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Submission: 2022-11-09, Acceptance: 2022-11-09, Publication: 2022-11-09
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Reference: J. High Energy Phys. 11 (2022) 40