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The observation of the electroweak production of a W boson and a photon in association with two jets, using pp collision data at the Large Hadron Collider at a centre of mass energy of s=13 TeV, is reported. The data were recorded by the ATLAS experiment from 2015 to 2018 and correspond to an integrated luminosity of 140 fb-1. This process is sensitive to the quartic gauge boson couplings via the
The identification of jets originating from quarks and gluons, often referred to as quark/gluon tagging, plays an important role in various analyses performed at the Large Hadron Collider, as Standard Model measurements and searches for new particles decaying to quarks often rely on suppressing a large gluon-induced background. This paper describes the measurement of the efficiencies of quark/gluo
Measurements of inclusive and differential production cross-sections of a top-quark-top-antiquark pair in association with a W boson (tt¯W) are presented. They are performed by targeting final states with two same-sign or three isolated leptons (electrons or muons) and are based on s = 13 TeV proton-proton collision data with an integrated luminosity of 140 fb−1, recorded from 2015 to 2018 with th
Three searches for the direct production of τ-sleptons or charginos and neutralinos in final states with at least two hadronically decaying τ-leptons are presented. For chargino and neutralino production, decays via intermediate τ-sleptons or W and h bosons are considered. The analysis uses a dataset of pp collisions corresponding to an integrated luminosity of 139 fb−1, recorded with the ATLAS de
Long- and short-range correlations for pairs of charged particles are studied via two-particle angular correlations in pp collisions at s = 13 TeV and p–Pb collisions at sNN = 5.02 TeV. The correlation functions are measured as a function of relative azimuthal angle ∆φ and pseudorapidity separation ∆η for pairs of primary charged particles within the pseudorapidity interval |η| < 0.9 and the trans
Background: Allergic contact dermatitis (ACD) is an increasingly recognised condition in children and adolescents. However, there is limited knowledge about the different paediatric patch test procedures in European patch test clinics. Objectives: To map current European paediatric patch test practices, and to relate these to the existing literature, with the aim of guiding the development of a fu
Rural populations in Europe face health inequalities due to a multitude of factors, including the higher prevalence of multi-morbidity, inadequate access to primary and secondary health care services, and widespread health workforce shortages. Although some challenges are also present in other contexts, the multitude and interconnectedness of these factors induce significant health inequalities. R
Antimicrobial resistance (AMR) poses a major threat to global health, with limited surveillance data available from western sub-Saharan Africa. After reports of high rates of methicillin-resistant Staphylococcus aureus (MRSA) and extended-spectrum beta-lactamase (ESBL) in bloodstream infections at The Gambia’s sole tertiary hospital, we present follow-up data after enhancements in microbiology cap
Recovery Colleges (RCs) are learning-based mental health recovery communities, located globally. However, evidence on RC effectiveness outside Western, educated, industrialised, rich, and democratic (WEIRD) countries is limited. This study aimed to evaluate associations between cultural characteristics and RC fidelity, to understand how culture impacts RC operation. Service managers from 169 RCs s
The ATLAS tile calorimeter (TileCal) is the hadronic sampling calorimeter covering the central region of the ATLAS detector at the Large Hadron Collider (LHC). This paper gives an overview of the calorimeter’s operation and performance during the years 2015–2018 (Run 2). In this period, ATLAS collected proton–proton collision data at a centre-of-mass energy of 13 TeV and the TileCal was 99.65% eff
Increasing demands for the green transition have created an ethical dilemma: How can the extraction of critical minerals be combined with protection of Indigenous rights and local ecosystems? Is it even possible to find solutions to the conflicts that emerge in “green” energy projects? Contributing to these debates, this thesis set out to answer the following question: How can we understand pro- a
This thesis studies organizational change in the peacebuilding organization the School for Peace. It asks the question: What shapes organizational change in the School for Peace? Being located in Israel’s only peace bubble, the School for Peace presents as an unusual case of peacebuilding in unique conditions. To understand reasons for change and evolvement of the organization’s practice – as well
Artificial intelligence (AI) technologies are being widely employed globally to enhance marine safety services and address challenges within the maritime sector. Nevertheless, the provision of these services in East Africa, particularly within the Lake Victoria basin, is deficient and inadequate. Consequently, a study needs to be undertaken to pinpoint certain domains in marine safety that may be
This thesis investigates how sampling strategies influence the predictive accuracy and interpretability of bankruptcy models. Using financial data from U.S. publicly listed firms (2009 to 2023), it compares logistic regression and random forest classifiers trained under three sampling setups: no resampling, random undersampling (RUS), and SMOTE. Models are trained to predict one-year-ahead bankrup
The intended purpose of this study is to investigate the relationship between CEO compensation and long-term firm performance within the American banking sector. Restricted stock awards as a proportion of total calculated compensation (RSA%) are used to measure the degree of equity compensation, while return on equity (ROE) and net interest margin (NIM) act as proxies for firm performance. The ded
In the 1970s young danish people moved into abandoned military barracks in Christianshavn which started a squatting movement that gave rise to the area called Christiania, a semi-autonomous society where internal informal norms are prominent. Pusherstreet in Christiania has always received a lot of attention in the media with its open cannabis market. The market closed multiple times and has resi
