Pysics at LHC - Proseminar

• Francesco Fallavollita (Max Planck Institut für Physik - Werner Heisenberg Institute)

Room: A.2.11 - Andes

An Introduction to Particle Physics and Accelerators

• Davide Costa

Room: A.2.11 - Andes This presentation offers a foundational overview of particle physics and accelerator technology, designed for those new to the field. We will explore the fundamental particles and forces that make up our universe, and the main questions facing modern particle physics. This presentation will also cover the most important physical quantities to know when talking about collider experiments, and we will discuss the role of particle accelerators. Through examples from leading facilities like CERN, attendees will gain insight into how accelerators are used to recreate conditions from the early universe, allowing us to test our understanding of physics to unprecedented precision.

Particle Detectors for High Energy Physics

• Nick Meier

Room: A.2.11 - Andes Particle detectors play a crucial role in advancing high-energy physics by enabling the detection, identification, and measurement of particles produced in high-energy collisions. These sophisticated systems integrate diverse technologies, such as tracking detectors, calorimeters, and muon systems, each optimized for precise spatial resolution, energy measurement, or particle identification. Recent upgrades in particle detectors, driven by the challenges of next-generation colliders like the HL-LHC, focus on enhanced radiation tolerance, higher rate capabilities, and improved resolution to handle unprecedented collision environments. This presentation provides an overview of current detector technologies, with an emphasis on novel developments in gaseous detectors, silicon trackers, and calorimetry, highlighting their applications, performance under extreme conditions, and contributions to uncovering new physics phenomena.

Data Analysis in High Energy Physics

• Simon Grewe (Max-Planck-Institut für Physik )

Room: A.2.11 - Andes In this seminar, I will present an in-depth discussion on the latest precision measurement of the W boson mass conducted using the ATLAS detector. This analysis is based on the high-quality proton-proton collision data recorded by the ATLAS experiment at CERN in 2011, at a center-of-mass energy of 7 TeV. I will cover the experimental techniques employed, the challenges faced in achieving high precision, and the statistical and systematic uncertainties considered. Additionally, the implications of this measurement on the Standard Model and comparisons with previous results from other experiments will be explored.

Hadronic signals at the LHC: using calorimeter cell timing in ATLAS to face the challenges of higher luminosity

• Elena Cuppini (MPP PhD student)

Room: A.2.11 - Andes This presentation discusses how hadronic signals are processed in ATLAS. During LHC Runs 1 and 2, ATLAS primarily used energy, momentum, and fine detector segmentation, but this approach is sensitive to pile-up from soft collisions. Incorporating precise signal timing into reconstruction is emerging as a solution to improve pile-up suppression. While the High-Luminosity LHC will feature a dedicated timing detector, ATLAS calorimeters already provide timing information. By adding a timing criterion to the topological clustering algorithm, pile-up jets can be reduced by ~50% without affecting signal efficiency. This method is now the default for Run 3.

Master's Student Seminars

• Sajena Hamdi

Room: A.2.11 - Andes

Master's Student Seminars

• Max Griese

Room: A.2.11 - Andes

Master's Student Seminars

• Maria Leibelt

Room: A.2.11 - Andes