### Recent Submissions

• #### Search for an invisibly decaying Higgs boson or dark matter candidates produced in association with a Z boson in pp collisions at √s =13 TeV with the ATLAS detector ﻿

(Elsevier, 2018-01-10)
A search for an invisibly decaying Higgs boson or dark matter candidates produced in association with a leptonically decaying Z boson in proton–proton collisions at √s = 13 TeV is presented. This search uses 36.1 fb−1 ...
Journal article
• #### Search for long-lived charginos based on a disappearing-track signature in pp collisions at s√=13 TeV with the ATLAS detector ﻿

(Springer, 2018-06-05)
This paper presents a search for direct electroweak gaugino or gluino pair production with a chargino nearly mass-degenerate with a stable neutralino. It is based on an integrated luminosity of 36.1 fb−1 of pp collisions ...
Journal article
• #### Measurement of inclusive jet and dijet cross-sections in proton-proton collisions at √s=13 TeV with the ATLAS detector ﻿

(Springer, 2018-05-30)
Inclusive jet and dijet cross-sections are measured in proton-proton collisions at a centre-of-mass energy of 13 TeV. The measurement uses a dataset with an integrated luminosity of 3.2 fb−1 recorded in 2015 with the ATLAS ...
Journal article
• #### Search for heavy particles decaying into top-quark pairs using lepton-plus-jets events in proton–proton collisions at √s = 13 TeV with the ATLAS detector ﻿

(Springer, 2018-07-09)
Abstract A search for new heavy particles that decay into top-quark pairs is performed using data collected from proton–proton collisions at a centre-of-mass energy of 13 TeV by the ATLAS detector at the Large Hadron ...
Journal article
• #### Search for a heavy Higgs boson decaying into a Z boson and another heavy Higgs boson in the ℓℓbb final state in pp collisions at √s=13 TeV with the ATLAS detector ﻿

(Elsevier, 2018-08-10)
A search for a heavy neutral Higgs boson, A, decaying into a Z boson and another heavy Higgs boson, H, is performed using a data sample corresponding to an integrated luminosity of 36.1 fb−1 from proton– proton collisions ...
Journal article
• #### Elastic wave velocities and attenuation under methane hydrate growth in Bentheim sandstone - Measurements and modelling ﻿

(The University of Bergen, 2018-12-18)
Due to the potential for using methane hydrates as an energy source, localizing, monitoring and describing hydrate deposit areas are of interest. This has previously been attempted by using acoustic methods and thus ...
Doctoral thesis
• #### Transduser med stabil åpningsvinkel over et stort frekvensområde. Design, konstruksjon og eksperimentelle målinger ﻿

(The University of Bergen, 2009-11-14)
Denne oppgaven tar sikte på å finne en mulig transduserkonstruksjon hvis hensikt er å lette arbeidet ved klassifisering av fiskesorter. Mer vil bli sagt om bakgrunn og motivasjon, men hovedmålet i denne oppgaven er å lage ...
Master thesis
• #### Simulations of acoustic transmission loss of Fin whale calls reaching the LoVe Ocean Observatory ﻿

(The University of Bergen, 2018-12-18)
Equinor has plans to develop a whale monitoring station using acoustic animal destiny estimation at their cabled ocean observatory, the LoVe Observatory, in Lofoten-Vesterålen basin. The fauna of this area is of remarkable ...
Master thesis
• #### Impact of variable proton relative biological effectiveness on estimates of secondary cancer risk in paediatric cancer patients ﻿

(The University of Bergen, 2018-12-12)
Background: Proton therapy has an increased dose-conformity compared to conventional radiotherapy with photons, and paediatric cancer patients receiving cranio-spinal irradiation (CSI) are routinely referred to this treatment ...
Master thesis
• #### Investigating the energy yield of rain cells ﻿

(The University of Bergen, 2018-12-08)
Harvesting energy from rain has been done indirectly for hundreds of years by building dams or reservoirs. Recently, research has been made into gathering energy from individual raindrops. One of the discovered methods ...
Master thesis
• #### Modelling of Low Salinity Surfactant Polymer Coreflood Experiments ﻿

(The University of Bergen, 2018-12-07)
In recent years, there has been a growing interest in the effect of varying brine composition during waterflooding. Several studies on low salinity water injection have been conducted, and the results indicate a potential ...
Master thesis
• #### Characterization of the ALPIDE chip with Helium-4 ions for Proton Computed Tomography ﻿

(The University of Bergen, 2018-12-06)
Particle therapy has become an appealing therapeutic option for patients with various tumor types. The physical properties of charged particles allow for an improved dose distribution conformality compared to conventional ...
Master thesis
• #### Inclusive J/ψ cross section in proton-proton collisions at the center-of-mass energy 13TeV with ALICE ﻿

(The University of Bergen, 2018-12-07)
This thesis describes the inclusive cross section measurement of the J/ψ meson in the di-electron channel measured at mid-rapidity in proton-proton collisions at the center-of-mass energy 13 TeV. The analyzed data sample ...
Master thesis
• #### J/$\psi$ production as a function of charged-particle pseudorapidity density in p-Pb collisions at $\sqrt{s_{\rm NN}} = 5.02$ TeV ﻿

(Elsevier, 2018-01)
We report measurements of the inclusive J/$\psi$ yield and average transverse momentum as a function of charged-particle pseudorapidity density ${\rm d}N_{\rm ch}/{\rm d}\eta$ in p-Pb collisions at $\sqrt{s_{\rm NN}}= 5.02$ ...
Journal article
• #### $\pi^0$ and $\eta$ meson production in proton-proton collisions at $\sqrt{s}=8$ TeV ﻿

(Springer, 2018-03)
An invariant differential cross section measurement of inclusive $\pi^{0}$ and $\eta$ meson production at mid-rapidity in pp collisions at $\sqrt{s}=8$ TeV was carried out by the ALICE experiment at the LHC. The spectra ...
Journal article
• #### On the Persistent Shape and Coherence of Pulsating Auroral Patches ﻿

(American Geophysical Union, 2018-05)
The pulsating aurora covers a broad range of fluctuating shapes that are poorly characterized. The purpose of this paper is therefore to provide objective and quantitative measures of the extent to which pulsating auroral ...
Journal article
• #### Thermally excited 630.0 nm emissions in the polar ionosphere ﻿

(The University of Bergen, 2018-08-24)
This thesis investigates the importance and significance of thermally excited 630.0 nm emissions in the cusp and polar ionosphere. Thermal excitation by heated ambient electrons in the cusp and polar ionosphere is a rarely ...
Doctoral thesis
• #### Seasonal and Solar Cycle Variations of Thermally Excited 630.0 nm Emissions in the Polar Ionosphere ﻿

(American Geophysical Union, 2018-08)
Solar cycle and seasonal variations have been found in the occurrence of strong thermally excited 630.0 nm emissions in the polar ionosphere. Measurements from the European Incoherent Scatter Svalbard Radar have been used ...
Journal article
• #### Effect of Free Water Elimination on Diffusion Indices in Healthy Volunteers and Patients with Multiple Sclerosis ﻿

(The University of Bergen, 2018-11-08)
Diﬀusion tensor imaging (DTI) is a technique in magnetic resonance imaging (MRI) that can be used to image the brain microstructure beyond the resolution that is achievable using conventional imaging. By utilizing DTI, it ...
Master thesis
• #### Design of an Embedded Readout System for the ALOFT Gamma-Ray Detector Instrument ﻿

(The University of Bergen, 2018-10-24)
Birkeland Center for Space Science has proposed a campaign known as the Airborne Lightning Observatory for FEGS & TGFs (ALOFT) to study Terrestrial Gamma-Ray Flashes (TGFs). TGFs are the most energetic natural phenomena ...
Master thesis