Search results

Electric vehicles (EVs) are vital for a decarbonized society, but the rapid growth of the EV market highlights an impending lithium supply crisis. This study integrates supply-demand analysis with trade network simulations, using eight lithium demand scenarios and two supply scenarios to examine regional lithium dynamics and the impact of international trade. Results show that while domestic lithi

A combination of searches for the single production of vectorlike top quarks ((Formula presented)) is presented. These analyses are based on proton-proton collisions at (Formula presented) recorded in 2015-2018 with the ATLAS detector at the Large Hadron Collider, corresponding to an integrated luminosity of (Formula presented). The (Formula presented) decay modes considered in this combination ar

The high-luminosity phase of LHC operations (HL-LHC), will feature a large increase in simultaneous proton-proton interactions per bunch crossing up to 200, compared with a typical leveling target of 64 in Run 3. Such an increase will create a very challenging environment in which to perform charged particle trajectory reconstruction, a task crucial for the success of the ATLAS physics program, an

Charged Higgs bosons produced either in top-quark decays or in association with a top quark, subsequently decaying via (Formula presented), are searched for in (Formula presented) of proton-proton collision data at (Formula presented) recorded with the ATLAS detector. Depending on whether the top quark is produced together with the (Formula presented) decays hadronically or semileptonically, the s

This paper describes an algorithm for reconstructing and identifying a highly collimated hadronically decaying τ-lepton pair with low transverse momentum. When two τ-leptons are highly collimated, their visible decay products might overlap, degrading the reconstruction performance for each of the τ-leptons. A dedicated treatment attempting to tag the τ-lepton pair as a single object is required. T

A search is performed for light, spin-0 bosons decaying into two photons in the 66 to 110 GeV mass range, using 140 fb−1 of proton-proton collisions at s = 13 TeV produced by the Large Hadron Collider and collected by the ATLAS detector. Multivariate analysis techniques are used to define event categories that improve the sensitivity to new resonances beyond the Standard Model. A model-independent

We report resonant inelastic x-ray scattering (RIXS) spectra of neon atoms interacting with intense x-ray pulses generated using an x-ray free-electron laser (XFEL). We find that an unexpected peak emerges near the Ka line of Ne, which does not coincide with any physical resonances of neon ions. We perform theoretical calculations based on a quantum-state-resolved rate-equation approach with x-ray

Biodiversity in human-dominated landscapes is declining, but evidence-based conservation targets to guide international policies for such landscapes are lacking. We present a framework for informing habitat conservation policies based on the enhancement of habitat quantity and quality and define thresholds of habitat quantity at which it becomes effective to also prioritize habitat quality. We app

The first measurement at midrapidity (|y| < 0.5) of the production yield of the strange-charm baryons and as a function of transverse momentum (pT) in different charged-particle multiplicity classes in proton-proton collisions at TeV with the ALICE experiment at the LHC is reported. The baryon is reconstructed via the decay channel in the range 4 < pT< 12 GeV/c, while the baryon is reconstructed v

High-energy hadronic collisions generate environments characterized by temperatures above 100 MeV (refs. 1,2), about 100,000 times hotter than the centre of the Sun. At present, it is therefore unclear how light (anti)nuclei with mass number A of a few units, such as the deuteron, 3He or 4He, each bound by only a few MeV, can emerge from these collisions3,4. Here, the ALICE Collaboration reports t

We report on the measurement of inclusive, non-prompt, and prompt J/ψ-hadron correlations by the ALICE Collaboration at the CERN Large Hadron Collider in pp collisions at a center-of-mass energy of 13 TeV. The correlations are studied at midrapidity (|y| < 0.9) in the transverse momentum ranges pT< 40 GeV/c for the J/ψ and 0.15 < pT< 10 GeV/c and |η| < 0.9 for the associated hadrons. The measureme

A measurement of off-shell Higgs boson production is performed in the H * → WW channel. The measurement uses a proton–proton collision dataset with an integrated luminosity of 140 fb−1 collected at a centre-of-mass energy of 13 TeV by the ATLAS detector at the Large Hadron Collider. Final states in which both W bosons decay leptonically are targeted, and events are categorised based on the flavour

Regime change is considered essential for sustainability transitions. An important source of regime change is pressure from alternative innovations developed in niches and the actors involved. Governments often play an important role in such niche-regime interactions and affect whether, and how, this results in regime change. However, an overview of the various roles governments can play with resp

I takt med att gängkriminaliteten blivit en av Sveriges mest dominerande samhällsfrågor har kraven på snabba och kraftfulla politiska åtgärder ökat. En av de mest omdiskuterade förslagen är en sänkt straffmyndighetsålder. Uppsatsen Regeringen och en sänkt straffmyndighetsålder – när politisk opportunism går emot vetenskaplig evidens undersöker hur den svenska regeringen motiverar detta förslag i r

The United Kingdom’s response to the pressing biodiversity decline in England includes the Biodiversity Net Gain (BNG) policy and is operationalised through DEFRA’s Biodiversity Metric, which quantifies biodiversity into ‘biodiversity units’. This thesis evaluates how effectively the metric reflects real biodiversity outcomes at the rewilded Knepp Estate in West Sussex. Using 2005 as a baseline an