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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
In this paper we study a tongue of ionization (TOI) on 31 October 2011 which stretched across the polar cap from the Canadian dayside sector to Svalbard in the nightside ionosphere. The TOI front arrived over Svalbard ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
Supersymmetric models with R-parity violation (RPV) have become more popular following the lack of any excess of missing energy events at the 8 TeV LHC. To identify such models, the suggested searches generally rely on the ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
A measurement of the parity-violating decay asymmetry parameter, αb, and the helicity amplitudes for the decay Λ0b→J/ψ(μ+μ−)Λ0(pπ−) is reported. The analysis is based on 1400 Λ0b and Λ¯0b baryons selected in 4.6 fb−1 of ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
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 ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
The transverse momentum ( pT ) distribution of primary charged particles is measured at midrapidity in minimum-bias p–Pb collisions at sNN−−−√=5.02 TeV with the ALICE detector at the LHC in the range \(0.15 GeV/ c . The ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
A supersaturated fluid flowing over a reactive, rough surface leads to complex precipitation patterns. We study the growth and interaction between discrete precipitates along a reactive wall in a nonlaminar channel flow. ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
The Casimir force between two surfaces is attractive in most cases. Although stable suspension of nano-objects has been achieved, the sophisticated geometries make them difficult to be merged with well-established thin ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
The integrated elliptic flow of charged particles produced in Pb+Pb collisions at sNN−−−√=2.76 TeV has been measured with the ATLAS detector using data collected at the Large Hadron Collider. The anisotropy parameter, v2 ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
Objective We used diffusion tensor imaging (DTI) to test the following hypotheses: (1) there is decreased white matter (WM) integrity in non-demented Parkinson’s disease (PD), (2) WM integrity is differentially reduced in ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
This paper presents the performance of the ATLAS muon reconstruction during the LHC run with pp collisions at s√=7 –8 TeV in 2011–2012, focusing mainly on data collected in 2012. Measurements of the reconstruction efficiency ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
A novel technique has been developed, which will open exciting new opportunities for studying the very neutron-rich nuclei involved in the r process. As a proof of principle, the γ spectra from the β decay of 76Ga have ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
We investigate the production of antideuterons from decaying dark matter, using gravitinos in supersymmetric models with trilinear R-parity-violating (RPV) operators as an example. The model used for antideuteron formation ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
To study how macroscopic friction phenomena originate from microscopic junction laws, we introduce a general statistical framework describing the collective behavior of a large number of individual microjunctions forming ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
The Lindås Nappe, Bergen Arc, is located in western Norway and displays two high-grade metamorphic structures. A Precambrian granulite facies foliation is transected by Caledonian fluid-induced eclogite-facies shear zones ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
The photocatalytic efficiency of a thin-film TiO2-coated nanostructured template is studied by dye degradation in water. The nanostructured template was synthesized by metal-assisted wet etching of Si and used as substrate ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
As the chemical structures of radiation damaged molecules may differ greatly from their undamaged counterparts, investigation and description of radiation damaged structures is commonly biased by the researcher. Radical ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
This paper describes a measurement of the Z/γ * boson transverse momentum spectrum using ATLAS proton-proton collision data at a centre-of-mass energy of s√=7 TeV at the LHC. The measurement is performed in the Z/γ * → e ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
Ground-based observations of dayside auroral forms and magnetic perturbations in the arctic sectors of Svalbard and Greenland, in combination with the high-resolution measurements of ionospheric ion drift and temperature ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
Absorption of radio waves in the polar ionosphere near the magnetic noon was observed on October 8, 1991, by the 30 MHz imaging riometer at Ny-Alesund, Svalbard (invariant latitude 76.1°). These observations showed that ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
In this work, a comprehensive study on the transition of divacancy (V2) to divacancy-oxygen (V2O) pairs in p-type silicon has been performed with deep level transient spectroscopy (DLTS). Czochralski grown, boron doped ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
The formation of donor and acceptor states of the trivacancy-oxygen (V 3O) complex in p- and n-type silicon, respectively, has been studied in detail by means of deep level transient spectroscopy. The samples were irradiated ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
Two sequences, before and after magnetic noon, respectively, of poleward moving auroral forms with associated upflows situated above the European Incoherent Scatter Svalbard Radar allowed close study of ion upflow dynamics. ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
Transverse momentum spectra of π±, K± and View the MathML source up to pT=20 GeV/c at mid-rapidity in pp, peripheral (60–80%) and central (0–5%) Pb–Pb collisions at View the MathML source have been measured using the ALICE ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
Random networks of integrate-and-fire neurons with strong current-based synapses can, unlike previously believed, assume stable states of sustained asynchronous and irregular firing, even without external random background ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2014)
The oxygen nonstoichiometry in the misfit calcium cobaltite (Ca2CoO3)0.62(CoO2) has been studied experimentally and by density functional theory (DFT) calculations. The standard oxidation enthalpy ΔH0Ox of oxygen deficient ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
An unexpected enhancement in the low-energy part of the γ-strength function for light and medium-mass nuclei has been discovered at the Oslo Cyclotron Laboratory. This enhancement could lead to an increase in the neutron-capture ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
Luminescent europium titanium oxides (EuxTiyOz) have been deposited as thin films by atomic layer deposition (ALD) in the temperature range 225 to 375 °C with control of the stoichiometry from pure TiO2 to pure Eu2O3, and ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
Distributions sensitive to the underlying event in QCD jet events have been measured with the ATLAS detector at the LHC, based on 37 pb−1 of proton–proton collision data collected at a centre-of-mass energy of 7 TeV . ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
A search for strongly produced supersymmetric particles is conducted using signatures involving multiple energetic jets and either two isolated leptons (e or μ) with the same electric charge, or at least three isolated ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
The differential cross section for the process Z/γ ∗ → ℓℓ (ℓ = e, μ) as a function of dilepton invariant mass is measured in pp collisions at s√ = 7 TeV at the LHC using the ATLAS detector. The measurement is performed in ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
A search for the neutral Higgs bosons predicted by the Minimal Supersymmetric Standard Model (MSSM) is reported. The analysis is performed on data from proton-proton collisions at a centre-of-mass energy of 8 TeV collected ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
We show through experiments and supporting simulations that propagation of a highly relativistic and dense electron bunch through a plasma can lead to distributed injection of electrons, which depletes the accelerating ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
We study the zero-point and thermal ionic motion in La2CuO4 by means of high-resolution neutron-diffraction experiments. Our results demonstrate anisotropic motion of O and, to a lesser extent, Cu ions, both consistent ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
The nuclear level densities of 194–196Pt and 197,198Au below the neutron separation energy have been measured using transfer and scattering reactions. All the level density distributions follow the constant-temperature ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
ATLAS measurements of the azimuthal anisotropy in lead–lead collisions at √sNN = 2.76 TeV are shown using a dataset of approximately 7μb−1 collected at the LHC in 2010. The measurements are performed for charged particles ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
This paper presents the electron and photon energy calibration achieved with the ATLAS detector using about 25 fb −1 of LHC proton–proton collision data taken at centre-of-mass energies of s√=7 and 8 TeV. The reconstruction ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
A likelihood-based discriminant for the identification of quark- and gluon-initiated jets is built and validated using 4.7 fb −1 of proton–proton collision data at s√=7 TeV collected with the ATLAS detector at the LHC. ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
A measurement of charged-particle distributions sensitive to the properties of the underlying event is presented for an inclusive sample of events containing a Z-boson, decaying to an electron or muon pair. The measurement ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
The ratio of the production cross sections for W and Z bosons in association with jets has been measured in proton–proton collisions at s√=7TeV with the ATLAS experiment at the Large Hadron Collider. The measurement is ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
This paper presents a study of the performance of the muon reconstruction in the analysis of proton–proton collisions at s√=7 TeV at the LHC, recorded by the ATLAS detector in 2010. This performance is described in terms ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
In high-energy collisions, the spatio-temporal size of the particle production region can be measured using the Bose–Einstein correlations of identical bosons at low relative momentum. The source radii are typically extracted ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
The results of a search for top squark (stop) pair production in final states with one isolated lepton, jets, and missing transverse momentum are reported. The analysis is performed with proton-proton collision data at s√ ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
A search for supersymmetry (SUSY) in events with large missing transverse momentum, jets, at least one hadronically decaying tau lepton and zero or one additional light leptons (electron/muon), has been performed using ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
A search for squarks and gluinos in final states containing high-p T jets, missing transverse momentum and no electrons or muons is presented. The data were recorded in 2012 by the ATLAS experiment in s√=8 TeV proton-proton ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
A search is presented for the production of new heavy quarks that decay to a Z boson and a third-generation Standard Model quark. In the case of a new charge +2/3 quark (T ), the decay targeted is T → Zt, while the decay ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
Measurements of fiducial cross sections for the electroweak production of two jets in association with a Z-boson are presented. The measurements are performed using 20.3 fb−1 of proton-proton collision data collected at a ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
This paper presents a measurement of the top quark pair ( tt¯ ) production charge asymmetry A C using 4.7 fb−1 of proton-proton collisions at a centre-of-mass energy s√ = 7 TeV collected by the ATLAS detector at the LHC. ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
A search is conducted for non-resonant new phenomena in dielectron and dimuon final states, originating from either contact interactions or large extra spatial dimensions. The LHC 2012 proton–proton collision dataset ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
The prompt and non-prompt production cross-sections for ψ(2S) mesons are measured using 2.1 fb−1 of pp collision data at a centre-of-mass energy of 7 TeV recorded by the ATLAS experiment at the LHC. The measurement exploits ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
We directly compare the relative GPS scintillation levels associated with regions of enhanced plasma irregularities called auroral arcs, polar cap patches, and auroral blobs that frequently occur in the polar ionosphere. ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
A search for an excess of events with multiple high transverse momentum objects including charged leptons and jets is presented, using 20.3 fb−1 of proton-proton collision data recorded by the ATLAS detector at the Large ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
Several models of physics beyond the Standard Model predict neutral particles that decay into final states consisting of collimated jets of light leptons and hadrons (so-called “lepton jets”). These particles can also be ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
The precise measurement of forces is one way to obtain deep insight into the fundamental interactions present in nature. In the context of neutral antimatter, the gravitational interaction is of high interest, potentially ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
It has previously been demonstrated that the presence of fetal bovine serum is necessary for TGF-β3 (transforming growth factor beta 3)-dependent elimination of low-dose hyper-radiosensitivity (HRS) in cells by 1 h of ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
We present an experimental study of two-phase flow in a quasi-two-dimensional porous medium. The two phases, a water-glycerol solution and a commercial food grade rapeseed/canola oil, having an oil to water-glycerol viscosity ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
We study the rotational (yrast) spectra of dilute two-component atomic Bose gases in the low angular momentum regime, assuming equal interspecies and intraspecies interaction. Our analysis employs the composite fermion ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
Event-by-event fluctuations of the mean transverse momentum of charged particles produced in pp collisions at TeX TeX 0.9, 2.76 and 7 TeV, and Pb–Pb collisions at TeX TeX 2.76 TeV are studied as a function of the ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)