Tag: ATLAS
-
Extending ATLAS Physics Reach with Analysis Reuse Technology
Extending ATLAS Physics Reach with Analysis Reuse Technology In August 2023, the ATLAS Collaboration presented the most comprehensive results to date of searches for electroweak production of supersymmetric particles interpreted within the Phenomenological Minimal Supersymmetric Standard Model (pMSSM) theoretical framework. This result was a tour de force from ATLAS’s supersymmetry physics group, pulling together results
-
The ATLAS New Small Wheel – Triggering on muons and rejecting fakes
The ATLAS New Small Wheel – Triggering on muons and rejecting fakes The New Small Wheel (NSW) [1] has been the largest Phase-1 upgrade project of ATLAS. The two innermost stations of the Endcap Muon spectrometer have been replaced with two newly built detector systems based on small-strip Thin Gap Chambers (sTGC) and Micromegas (MM).
-
First analysis of Run 3 data with a new slim data format
First analysis of Run 3 data with a new slim data format The ATLAS Collaboration has just released a new measurement of the production cross-section of two Z bosons. This result examines data collected during Run 3 of the LHC – with protons colliding at a record energy of 13.6 TeV – and pioneers the
-
ATLAS and CMS unite to weigh in on the top quark
ATLAS and CMS unite to weigh in on the top quark The ATLAS and CMS Experiments at CERN have just released a new measurement of the mass of the top quark. The new result combines 15 previous measurements to give the most precise determination of the top-quark mass to date. Among the known fundamental particles
-
Ending the 2023 LHC run with heavy-ion collisions
Ending the 2023 LHC run with heavy-ion collisions The LHC schedule for 2023 has been revised following the emergence of a leak in mid-July. The decision was to stop the regular proton running this year and focus on the heavy ion physics that was already scheduled for the year-end. This was complemented by relatively brief
-
In discussion with Valentina Cairo
In discussion with Valentina Cairo Earlier this summer, the 2023 Young Experimental Physicist Prize of the High Energy and Particle Physics Division of the European Physical Society – for early career experimental physicists – was awarded to CERN staff physicist Valentina Cairo for her outstanding contributions to the ATLAS experiment: from the construction of the
-
Triggering in ATLAS in Run 3
Triggering in ATLAS in Run 3 The ATLAS collaboration recently celebrated its 30th anniversary following the submission of the experiment’s Letter of Intent in 1992 and has accomplished great achievements during these years. However, it is still a young experiment, with only 6% of the total data set acquired to date. During the LHC Long
-
A word from the DIRAC and Rucio Workshop 2023
A word from the DIRAC and Rucio Workshop 2023 DIRAC and Rucio are two software projects used for scientific computing. Both projects are led by CERN, and the EP department is one of the major contributors to both. DIRAC is used by CERN experiments such as LHCb, CLIC, FCC, NA62, and non-CERN experiments like Belle
-
Jet Substructure as a powerful probe of Quantum Chromodynamics
Jet Substructure as a powerful probe of Quantum Chromodynamics Jet substructure (JSS) has emerged as a powerful framework for studying the Standard Model (SM) and provides a key set of tools for probing nature at the highest energy scales accessible by terrestrial experiments. While not an experimental or theoretical consideration of the design of the
-
ATLAS gears up for Run 3 physics results
ATLAS gears up for Run 3 physics results Who breaks Electroweak symmetry? It sounds like a simple question and the Standard Model of Particle Physics, the prevailing theory for the last half century, has a simple answer – it’s the Higgs. The Standard Model theory predicts that the Higgs boson and field acts as a