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Parameter Scans and Machine Learning for beyond Standard Model Physics
(Doctoral thesis, 2019-05-02)This thesis focuses on different beyond Standard Model theories, and the use of statistical methods to investigate them. Supersymmetry is considered in different contexts. First, the supersymmetry breaking scheme of gaugino ... -
Particle identification in ALICE: a Bayesian approach
(Peer reviewed; Journal article, 2016-05-25)We present a Bayesian approach to particle identification (PID) within the ALICE experiment. The aim is to more effectively combine the particle identification capabilities of its various detectors. After a brief explanation ... -
Particle Production in p+p and d+Au Collisions at √sNN = 200 GeV
(Doctoral thesis, 2007-12-14) -
Particle size distribution of methane hydrates and particle growth using a CFD-PBM model
(Master thesis, 2018-08-30)Gas hydrates are solid crystalline compounds that contain water and gas molecules, and can be considered to be a natural occurring phenomena located in enormous amounts around the world. Particle growth and agglomeration ... -
Particle-yield modification in jet-like azimuthal dihadron correlations in Pb-Pb collisions at \(\sqrt{s_{NN}}\) = 2.76 TeV
(Peer reviewed; Journal article, 2012-03)The yield of charged particles associated with high-pT trigger particles (8 < pT < 15 GeV/c) is measured with the ALICE detector in Pb-Pb collisions at \(\sqrt{s_{NN}}\) = 2.76 TeV relative to proton-proton collisions at ... -
Particle–wave discrimination in Poisson spot experiments
(Peer reviewed; Journal article, 2011)Matter–wave interferometry has been used extensively over the last few years to demonstrate the quantum-mechanical wave nature of increasingly larger and more massive particles. We have recently suggested the use of the ... -
PEPT: an invaluable tool for 3-D particle tracking and CFD simulation verification in hydrocyclone studies
(Journal article, 2013)Particle tracks in a hydrocyclone generated both experimentally by positron emission particle tracking (PEPT) and numerically with Eulerian-Lagranian CFD have been studied and compared. A hydrocyclone with a cylinder-on-cone ... -
Performance Evaluation of a Small-Animal PET/CT System
(Master thesis, 2014-06-02)This master project is the first vendor-independent performance evaluation of the new nanoScan PET/CT system at the University of Bergen. A comprehensive performance evaluation of a novel scanner is very important, ... -
Performance of missing transverse momentum reconstruction with the ATLAS detector using proton–proton collisions at √s=13 TeV
(Peer reviewed; Journal article, 2018-11)The performance of the missing transverse momentum (Emiss T ) reconstruction with the ATLAS detector is evaluated using data collected in proton–proton collisions at the LHC at a centre-of-mass energy of 13 TeV in ... -
Performance of the ATLAS muon trigger in pp collisions at \(\sqrt{s})\)8 TeV
(Peer reviewed; Journal article, 2015-03-13)The performance of the ATLAS muon trigger system has been evaluated with proton--proton collision data collected in 2012 at the Large Hadron Collider at a centre-of-mass energy of 8 TeV. The performance was primarily ... -
Performance of the ATLAS muon triggers in Run 2
(Journal article; Peer reviewed, 2020-09)The performance of the ATLAS muon trigger system is evaluated with proton-proton (pp) and heavy-ion (HI) collision data collected in Run 2 during 2015–2018 at the Large Hadron Collider. It is primarily evaluated using ... -
Performance of the ATLAS Transition Radiation Tracker in Run 1 of the LHC: Tracker properties
(Peer reviewed; Journal article, 2017)The tracking performance parameters of the ATLAS Transition Radiation Tracker (TRT) as part of the ATLAS inner detector are described in this paper for different data-taking conditions in proton-proton, proton-lead and ... -
Performance of the ATLAS trigger system in 2015
(Peer reviewed; Journal article, 2017-05)During 2015 the ATLAS experiment recorded \(3.8 \mathrm{fb}^{-1}\) of proton--proton collision data at a centre-of-mass energy of \(13 \mathrm{TeV}\), The ATLAS trigger system is a crucial component of the experiment, ... -
Performance of the High Level Trigger gamma-conversion reconstruction chain in the ALICE central tracking detectors
(Master thesis, 2011-06-01)Photons are produced through various processes in the particle and nuclei collisions at the LHC, and pose as useful probes of the formation of a Qaurk-Gluon Plasma. The probability of a photon converting within the central ... -
Performance of the missing transverse momentum triggers for the ATLAS detector during Run-2 data taking
(Journal article; Peer reviewed, 2020)The factor of four increase in the LHC luminosity, from 0.5 × 10^34 cm^−2 s^−1 to 2.0 × 10^34cm^−2 s^−1, and the corresponding increase in pile-up collisions during the 2015–2018 data-taking period, presented a challenge ... -
Performance of the upgraded PreProcessor of the ATLAS level-1 calorimeter trigger
(Journal article; Peer reviewed, 2020-11)The PreProcessor of the ATLAS Level-1 Calorimeter Trigger prepares the analogue trigger signals sent from the ATLAS calorimeters by digitising, synchronising, and calibrating them to reconstruct transverse energy deposits, ... -
Performance of top-quark and WW-boson tagging with ATLAS in Run 2 of the LHC
(Peer reviewed; Journal article, 2019-04-30)The performance of identification algorithms (“taggers”) for hadronically decaying top quarks and W bosons in pp collisions at s√ = 13 TeV recorded by the ATLAS experiment at the Large Hadron Collider is presented. A set ... -
Periodic shock-emission from acoustically driven cavitation clouds: a source of the subharmonic signal
(Peer reviewed; Journal article, 2014-12)Single clouds of cavitation bubbles, driven by 254 kHz focused ultrasound at pressure amplitudes in the range of 0.48–1.22 MPa, have been observed via high-speed shadowgraphic imaging at 1 × 10⁶ frames per second. Clouds ... -
Permittivity measurements using dual open ended coaxial probes
(Master thesis, 2012-11-19)The motivation for this study has been to conduct a feasibility study on a measuring device to monitor hydrate formation close to the inner surface of a pipe where a multiphase hydrocarbon fluid mixture is flowing. This ...