Sökresultat

A measurement of the invisible width of the Z boson using events with jets and missing transverse momentum is presented using 37 fb−1 of 13 TeV proton–proton data collected by the ATLAS detector in 2015 and 2016. The ratio of Z→inv to Z→ℓℓ events, where inv refers to non-detected particles and ℓ is either an electron or a muon, is measured and corrected for detector effects. Events with at least o

A search for CP violation in D0→KS0K+π− and D0→KS0K−π+ decays is reported. The search is performed using an unbinned model-independent method known as the energy test that probes local CP violation in the phase space of the decays. The data analysed correspond to an integrated luminosity of 5.4 fb−1 collected in proton-proton collisions by the LHCb experiment at a centre-of-mass energy of s = 13 T

A combination of searches for Higgs boson decays into a visible photon and a massless dark photon (H → γγd) is presented using 139 fb−1 of proton-proton collision data at a centre-of-mass energy of s = 13 TeV recorded by the ATLAS detector at the Large Hadron Collider. The observed (expected) 95% confidence level upper limit on the Standard Model Higgs boson decay branching ratio is determined to

BakgrundLångvarig behandling med opioida läkemedel, här definierat som> 3 månader, på indikation långvarig icke-malign smärta är vanligt förekommande i smärtvården. Vid undersökningar i Lund och Linköping har noterats att ungefär en tredjedel av populationen vid smärtklinikerna exponeras för opioidbehandling, trots avsaknad av evidens och samtidigt väl kända risker med behandlingen. Nedtrappning a

The energy and mass measurements of jets are crucial tasks for the Large Hadron Collider experiments. This paper presents a new calibration method to simultaneously calibrate these quantities for large-radius jets measured with the ATLAS detector using a deep neural network (DNN). To address the specificities of the calibration problem, special loss functions and training procedures are employed,

Forskningsfråga: Vilka faktorer påverkar finansiell hållbarhet i svenska kommuner och kommunala koncerner? Skiljer sig utfallet mellan kommunen som juridisk person och den kommunala koncernen? Syfte: Att analysera och undersöka demografiska faktorers påverkan på finansiell hållbarhet med särskilt fokus på att jämföra kommuner med kommunala koncerner. Metod: Kvantitativ paneldataanalys, Fixed Effec

Regeringen har genomfört ett antal lagändringar på det kriminalpolitiska området i repressiv riktning den senaste mandatperioden. Även Socialdemokraterna, som är i opposition, förespråkar olika typer av straffskärpningar och däribland sänkt straffbarhetsålder, detta trots att straffskärpningar inte har något stöd i forskning. Denna uppsats undersöker vad det är som ger upphov till den politiska gå

The need for large-scale production of highly accurate simulated event samples for the extensive physics programme of the ATLAS experiment at the Large Hadron Collider motivates the development of new simulation techniques. Building on the recent success of deep learning algorithms, variational autoencoders and generative adversarial networks are investigated for modelling the response of the cent

Precision measurements of electron reconstruction, identification, and isolation efficiencies and photon identification efficiencies are presented. They use the full Run 2 data sample collected by the ATLAS experiment in pp collisions at a centre-of-mass energy of 13 TeV during the years 2015–2018, corresponding to an integrated luminosity of 139 fb−1. The measured electron identification efficien

Fiducial and total W± and Z boson cross sections, their ratios and the ratio of top-antitop-quark pair and W-boson fiducial cross sections are measured in proton–proton collisions at a centre-of-mass energy of s=13.6 TeV, corresponding to an integrated luminosity of 29 fb−1 of data collected in 2022 by the ATLAS experiment at the Large Hadron Collider. The measured fiducial cross-section values fo

A search for R-parity-violating supersymmetry in final states with high jet multiplicity is presented. The search uses 140 fb−1 of proton-proton collision data at s = 13 TeV collected by the ATLAS experiment during Run 2 of the Large Hadron Collider. The results are interpreted in the context of R-parity-violating supersymmetry models that feature prompt gluino-pair production decaying directly to

The solution of coupled multi-field problems by means of commercially available finite element codes such as Abaqus constitutes an important part in the study of industrial processes. Against this background, a comprehensive implementation framework for a gradient-enhanced continuum damage formulation in a thermo-mechanically coupled finite deformation setting is proposed in this contribution. To

Denna uppsats undersöker hur maskulinitet formas och värderas i feminiserade kulturella sammanhang i digitala medier, med fokus på BookTok och TikTok. Utgångspunkten är att läsning i samtiden ofta associeras med femininitet och att manliga aktörer därför blir särskilt synliga i kvinnodominerade litterära communityn. Studien analyserar hur manliga BookTok-kreatörer, Lukesreads och Tayrosen, iscensä

Abstract: The purpose of this study is to investigate how Russia communicates with their religious and ethnic minorities on the invasion of Ukraine. To do this I have studied the use of the words “shaytany”, “shaytanizatsia” and “desatanizatsia” describing Ukrainians and the invasion of Ukraine in Russian state-controlled media during 2022. My hypothesis was that these words are used in a narrativ