Blar i Department of Physics and Technology på tittel
Viser treff 2188-2207 av 2282
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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 Bose–Einstein correlations in pp collisions at √s=13 TeV measured with the ATLAS detector at the LHC
(Peer reviewed; Journal article, 2022)This paper presents studies of Bose–Einstein correlations (BEC) in proton–proton collisions at a centre-of-mass energy of 13 TeV, using data from the ATLAS detector at the CERN Large Hadron Collider. Data were collected ... -
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) -
Uncertainty estimation in sound scattering measurements within an anechoic chamber
(Master thesis, 2022-01-07)Uncertainty was estimated for seven variable changes in sound scattering measurements in an anechoic chamber to explore their impact individually and compared to each other. These variables were change of loudspeaker, ... -
Uncertainty-aware spot rejection rate as quality metric for proton therapy using a digital tracking calorimeter
(Journal article; Peer reviewed, 2023)Objective. Proton therapy is highly sensitive to range uncertainties due to the nature of the dose deposition of charged particles. To ensure treatment quality, range verification methods can be used to verify that the ... -
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 ... -
Underwater Ultrasonic Transducer Technology. Construction, Characterization and Finite-Element Modelling.
(Master thesis, 2022-03-30)The main objective of this thesis is to construct and characterize ultrasonic transducers. The transducers are constructed to get the information needed for finite element simulations with the wanted accuracy since commercial ... -
A unified picture of medium-induced radiation
(Journal article; Peer reviewed, 2023)We revisit the picture of jets propagating in the quark-gluon plasma. In addition to vacuum radiation, partons scatter on the medium constituents resulting in induced emissions. Analytical approaches to including these ... -
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 ...