N. M. Hartmann
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View article: Building a Columnar Analysis Demonstrator for ATLAS PHYSLITE Open Data using the Python Ecosystem
Building a Columnar Analysis Demonstrator for ATLAS PHYSLITE Open Data using the Python Ecosystem Open
The ATLAS experiment is in the process of developing a columnar analysis demonstrator, which takes advantage of the Python ecosystem of data science tools. This project is inspired by the analysis demonstrator from IRIS-HEP. The demonstrat…
View article: Constructing model-agnostic likelihoods, a method for the reinterpretation of particle physics results
Constructing model-agnostic likelihoods, a method for the reinterpretation of particle physics results Open
Experimental High Energy Physics has entered an era of precision measurements. However, measurements of many of the accessible processes assume that the final states’ underlying kinematic distribution is the same as the Standard Model pred…
View article: How the Scientific Python ecosystem helps answer fundamental questions of the Universe
How the Scientific Python ecosystem helps answer fundamental questions of the Universe Open
The ATLAS experiment at CERN explores vast amounts of physics data to answer the most fundamental questions of the Universe. The prevalence of Python in scientific computing motivated ATLAS to adopt it for its data analysis workflows while…
View article: Operational experience and R&D results using the Google Cloud for High-Energy Physics in the ATLAS experiment
Operational experience and R&D results using the Google Cloud for High-Energy Physics in the ATLAS experiment Open
The ATLAS experiment at CERN relies on a Worldwide Distributed Computing Grid infrastructure to support its physics program at the Large Hadron Collider. ATLAS has integrated cloud computing resources to complement its Grid infrastructure …
View article: Accelerating science: The usage of commercial clouds in ATLAS Distributed Computing
Accelerating science: The usage of commercial clouds in ATLAS Distributed Computing Open
The ATLAS experiment at CERN is one of the largest scientific machines built to date and will have ever growing computing needs as the Large Hadron Collider collects an increasingly larger volume of data over the next 20 years. ATLAS is co…
View article: Improved selective background Monte Carlo simulation at Belle II with graph attention networks and weighted events
Improved selective background Monte Carlo simulation at Belle II with graph attention networks and weighted events Open
When measuring rare processes at Belle II, a huge luminosity is required, which means a large number of simulations are necessary to determine signal efficiencies and background contributions. However, this process demands high computation…
View article: Ultra-High-Resolution Detector Simulation with Intra-Event Aware GAN and Self-Supervised Relational Reasoning
Ultra-High-Resolution Detector Simulation with Intra-Event Aware GAN and Self-Supervised Relational Reasoning Open
Simulating high-resolution detector responses is a computationally intensive process that has long been challenging in Particle Physics. Despite the ability of generative models to streamline it, full ultra-high-granularity detector simula…
View article: Columnar data analysis with ATLAS analysis formats
Columnar data analysis with ATLAS analysis formats Open
Future analysis of ATLAS data will involve new small-sized analysis formats to cope with the increased storage needs. The smallest of these, named DAOD_PHYSLITE, has calibrations already applied to allow fast downstream analysis and avoid …
View article: Pixel Detector Background Generation using Generative Adversarial Networks at Belle II
Pixel Detector Background Generation using Generative Adversarial Networks at Belle II Open
The pixel vertex detector (PXD) is an essential part of the Belle II detector recording particle positions. Data from the PXD and other sensors allow us to reconstruct particle tracks and decay vertices. The effiect of background hits on t…
View article: Search for gluinos and squarks in events with one isolated lepton, at least 2-9 jets and missing transverse momentum at $\sqrt{s}$ = 13 TeV with the ATLAS detector
Search for gluinos and squarks in events with one isolated lepton, at least 2-9 jets and missing transverse momentum at $\sqrt{s}$ = 13 TeV with the ATLAS detector Open
This poster presents the results of a search for gluinos and squarks in events with exactly one lepton in the final state in addition to multiple jets and large missing transverse momentum. The ATLAS data analysed was recorded in 2015 and …
View article: Search for Supersymmetry in events with an isolated lepton, at least 2-9 jets and missing transverse momentum with the ATLAS detector
Search for Supersymmetry in events with an isolated lepton, at least 2-9 jets and missing transverse momentum with the ATLAS detector Open
This thesis presents a search for the supersymmetric partners of quarks (squarks) and glu-\nons (gluinos) in proton-proton collision events with exactly one electron or muon, multiple\njets and missing transverse momentum in the final state…