Now showing items 1777-1796 of 1848

• #### Tuning the electronic band structure of metal surfaces for enhancing high-order harmonic generation ﻿

(Journal article; Peer reviewed, 2021)
High-harmonic generation (HHG) from the condensed matter phase holds promise to promote future cutting-edge research in the emerging field of attosecond nanoscopy. The key for the progress of the field relies on the ...
• #### Turbulence, Vorticity and Lambda Polarization ﻿

(Conference object; Peer reviewed, 2014)
Present highest energy heavy ion experiments show the dominance of the fluid dynamical processes. The possibility of new collective phenomena, rotation and turbulence occurs, which were known only in macroscopic systems ...
• #### Two Higgs Doublets plus One Dark Matter Singlet ﻿

(Master thesis, 2010-08-01)
In this thesis an extension of the 2HDM (see chapter 1) is explored. The extension admits an extra inert singlet which is a dark matter candidate. Before the exploration a large part of the thesis (chapter 2) is an overview ...
• #### Two mechanisms of stratospheric ozone loss in the Northern Hemisphere, studied using data assimilation of Odin/SMR atmospheric observations ﻿

(Peer reviewed; Journal article, 2017-02-07)
Observations from the Odin/Sub-Millimetre Radiometer (SMR) instrument have been assimilated into the DIAMOND model (Dynamic Isentropic Assimilation Model for OdiN Data), in order to estimate the chemical ozone (O3) loss ...
• #### Two particle correlation effects from rotation and instabilities in heavy ion collisions ﻿

(Master thesis, 2013-05-18)
Two particle correlations are studied in the reaction plane of peripheral relativistic heavy ion reactions where the initial state has substantial angular momentum. The earlier predicted rotation effect and Kelvin Helmholtz ...
• #### Two- and three-pion quantum statistics correlations in Pb-Pb collisions at √sNN = 2.76 TeV at the CERN Large Hadron Collider ﻿

(Peer reviewed; Journal article, 2014-02-26)
Correlations induced by quantum statistics are sensitive to the spatiotemporal extent as well as dynamics of particle-emitting sources in heavy-ion collisions. In addition, such correlations can be used to search for the ...
• #### Two-particle azimuthal correlations in photonuclear ultraperipheral Pb+Pb collisions at 5.02 TeV with ATLAS ﻿

(Journal article; Peer reviewed, 2021)
Two-particle long-range azimuthal correlations are measured in photonuclear collisions using 1.7 nb−1 of 5.02 TeV Pb+Pb collision data collected by the ATLAS experiment at the CERN Large Hadron Collider. Candidate events ...
• #### Two-particle differential transverse momentum and number density correlations in p−Pb collisions at 5.02 TeV and Pb-Pb collisions at 2.76 TeV at the CERN Large Hadron Collider ﻿

(Peer reviewed; Journal article, 2019-10-10)
We present measurements of two-particle differential number correlation functions R 2 and transverse momentum correlation functions P 2 , obtained from p -Pb collisions at 5.02 TeV and Pb-Pb collisions at 2.76 TeV. The ...
• #### Two-Photon Decay of Non-Standard Higgs Bosons ﻿

(Master thesis, 1999)
• #### Two-photon double ionization of helium by attosecond laser pulses: Evidence of highly correlated electron motion ﻿

(Peer reviewed; Journal article, 2012)
We apply a recently developed ab initio numerical framework to investigate the angular distributions of the emitted electrons in the immediate proximity of the threshold for the two-photon double ionization of helium. ...
• #### Two-pion femtoscopy in p-Pb collisions at $\sqrt{s_{\rm NN}}=5.02$ TeV ﻿

(Peer reviewed; Journal article, 2015-03)
We report the results of the femtoscopic analysis of pairs of identical pions measured in p-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV. Femtoscopic radii are determined as a function of event multiplicity and ...
• #### Types of pulsating aurora: Comparison of model and EISCAT electron density observations ﻿

(Journal article; Peer reviewed, 2022)
Energetic particle precipitation associated with pulsating aurora (PsA) can reach down to lower mesospheric altitudes and deplete ozone. It is well documented that pulsating aurora is a common phenomenon during substorm ...
• #### Ultrasonic measurement systems with diffraction correction for gas ﻿

(Master thesis, 2017-09-30)
• #### Underlying event properties in pp collisions at √s = 13 TeV ﻿

(Journal article; Peer reviewed, 2020)
This article reports measurements characterizing the Underlying Event (UE) associated with hard scatterings at midrapidity (|η| < 0.8) in pp collisions at √s = 13 TeV. The hard scatterings are identified by the leading ...
• #### Understanding the correlation between (g − 2) μ and μ → eγ in the MSSM ﻿

(Peer reviewed; Journal article, 2014-08)
The supersymmetric contributions to the muon anomalous magnetic moment a μ and to the decay μ → eγ are given by very similar Feynman diagrams. Previous works reported correlations in specific scenarios, in particular if a ...
• #### Universality of Lower Hybrid Waves at Earth's Magnetopause ﻿

(Journal article; Peer reviewed, 2019)
Waves around the lower hybrid frequency are frequently observed at Earth's magnetopause and readily reach very large amplitudes. Determining the properties of lower hybrid waves is crucial because they are thought to ...
• #### Unlocking multimodal PET-MR synergies for geoscience ﻿

(Journal article; Peer reviewed, 2020)
The recent combination of positron emission tomography (PET) and magnetic resonance (MR) imaging modalities in one clinical diagnostic tool represents a scientific advancement with high potential impact in geoscientific ...
• #### Unsteady-State CO2 Foam Generation and Propagation: Laboratory and Field Insights ﻿

(Journal article; Peer reviewed, 2022-09-07)
This work presents a multiscale experimental and numerical investigation of CO2 foam generation, strength, and propagation during alternating injection of surfactant solution and CO2 at reservoir conditions. Evaluations ...
• #### Unveiling the strong interaction among hadrons at the LHC ﻿

(Journal article; Peer reviewed, 2020)
One of the key challenges for nuclear physics today is to understand from first principles the effective interaction between hadrons with different quark content. First successes have been achieved using techniques that ...
• #### Update on the CP-Violating Inert-Doublet Model ﻿

(Conference object; Peer reviewed; Journal article, 2012)
We have updated a recently proposed extension of the Inert Doublet Model. The extension amounts to the addition of an extra non-inert scalar doublet. The model thus offers a possibility of CP violation in the scalar sector ...