LIP - Research

ATLAS is one of the four major experiments at the LHC, designed to exploit the full discovery potential and the huge range of physics opportunities that the LHC provides. The LIP Portuguese group was a founding member of the ATLAS Collaboration and has made important contributions to the detector, trigger and data acquisition system design, construction and commissioning. The most important of these were in the TileCal hadronic calorimeter, the forward detectors, and the jet trigger software. Since the beginning of LHC operations we have contributed to detector operation, performance studies, and to physics analysis. In addition, we are involved in the detector upgrades for running in the higher luminosity phases, with responsibilities in the TileCal and Trigger systems.

We were part of the Higgs boson discovery and are now measuring its properties. We are a reference in top quark physics studies and have exploited this expertise to lead several searches for new physics. We have made important contributions to the ATLAS heavy ion physics programme with the study of jets as probes of the quark-gluon plasma.

Group webpage at LIP

Correlated long-range mixed-harmonic fluctuations measured in $pp$, $p$+Pb and low-multiplicity Pb+Pb collisions with the ATLAS detector
Author(s): ATLAS collaboration (2925 authors)
Submission: 2019-02-10, Acceptance: 2019-02-10, Publication: 2019-02-10
Reference: Phys.Lett. B789 (2019) 444-471

Measurements of gluon-gluon fusion and vector-boson fusion Higgs boson production cross-sections in the $H o WW^{ast} o e umu u$ decay channel in $pp$ collisions at $sqrt{s}=13$ TeV with the ATLAS detector
Author(s): ATLAS collaboration (2935 authors)
Submission: 2019-02-10, Acceptance: 2019-02-10, Publication: 2019-02-10
Reference: Phys.Lett. B789 (2019) 508-529

Measurement of photon–jet transverse momentum correlations in 5.02 TeV Pb + Pb and $pp$ collisions with ATLAS
Author(s): ATLAS collaboration (2924 authors)
Submission: 2019-02-10, Acceptance: 2019-02-10, Publication: 2019-02-10
Reference: Phys.Lett. B789 (2019) 167-190

Sensitivity of searches for the flavour-changing neutral current decay t rightarrow qZ using the upgraded ATLAS experiment at the High Luminosity LHC
Author(s): ATLAS Collaboration
Publication: 2019-01-11
Reference: ATL-PHYS-PUB-2019-001