Blar i Department of Physics and Technology på tittel
Viser treff 1960-1979 av 2153
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Study of heavy-flavor quarks produced in association with top-quark pairs at √s =7 TeV using the ATLAS detector
(Peer reviewed; Journal article, 2014-04-21)Using a sample of dilepton top-quark pair (tt¯) candidate events, a study is performed of the production of top-quark pairs together with heavy-flavor (HF) quarks, the sum of tt¯+b+X and tt¯+c+X, collectively referred to ... -
Study of Industrial Grade Thermal Insulation at Elevated Temperatures
(Journal article; Peer reviewed, 2020)Thermal insulation is used for preventing heat losses or heat gains in various applications. In industries that process combustible products, inorganic-materials-based thermal insulation may, if proven sufficiently heat ... -
Study of J/ψ azimuthal anisotropy at forward rapidity in Pb-Pb collisions at √sNN=5.02 TeV
(Peer reviewed; Journal article, 2019-02-04)The second (v2) and third (v3) flow harmonic coefficients of J/ψ mesons are measured at forward rapidity (2.5 < y < 4.0) in Pb-Pb collisions at √ sNN = 5.02 TeV with the ALICE detector at the LHC. Results are obtained with ... -
Study of leading hadrons in gluon and quark fragmentation
(Peer reviewed; Journal article, 2006-12)The study of quark jets in e+e− reactions at LEP has demonstrated that the hadronisation process is reproduced well by the Lund string model. However, our understanding of gluon fragmentation is less complete. In this study ... -
A study of mass reconstruction in Z°→τ+τ-
(Master thesis, 2010-05-28)Neutrinos escaping detection is one of the main problems in mass reconstruction with tau leptons. They must be neglected or corrected for in some way. This thesis discusses two methods of handling the neutrinos in different ... -
Study of meso-scale reversed flow events in the polar ionosphere by SuperDARN radars
(Master thesis, 2017-06-29)In this study we have investigated Reversed Flow Events (RFEs) in the northern hemisphere polar cap. A RFE is an ∼50-250 km wide flow channel that opposes the large scale background flow. A total of 57 new RFEs were ... -
A study of selected problems related to accidental process fires
(Doctoral thesis, 2011-04-15)An experimental full scale characterization of a turbulent propane jet flame has been made in terms of temperatures and radiation. Sonic propane gas releases were achieved at steady pressure and near steady flow. Commercial ... -
A study of temperature profiles in ceiling jets under horizontal unconfined ceilings with the CFD tools FLACS and FDS
(Master thesis, 2017-06-22)The key to controlling accidental fires, is early detection by the correct placement of devices such as smoke detectors and sprinkler systems. Smoke is accompanied by a temperature rise, brought about by the ceiling jet ... -
A study of the b-quark fragmentation function with the DELPHI detector at LEP I and an averaged distribution obtained at the Z Pole
(Peer reviewed; Journal article, 2011-02-23)The nature of b-quark jet hadronisation has been investigated using data taken at the Z peak by the DELPHI detector at LEP. Two complementarymethods are used to reconstruct the energy of weakly decaying b-hadrons, Eweak B ... -
A study of the Coriolis flowmeter as a reference instrument in multiphase flow
(Master thesis, 2015-09-11)The objective of this thesis was to investigate how a two-liquid mixture, and injected gas, affects the measurements of a Coriolis flowmeter. Furthermore it was of interest to investigate whether entrained gas could be ... -
Study of the dependence of direct soft photon production on the jet characteristics in hadronic Z0 decays
(Peer reviewed; Journal article, 2010-06-09)An analysis of the direct soft photon production rate as a function of the parent jet characteristics is presented, based on hadronic events collected by the DELPHI experiment at LEP1. The dependences of the photon rates ... -
Study of the flow in a hydrocyclone using positron emission particle tracking and computational fluid dynamics simulation
(Doctoral thesis, 2016-06-22)This thesis presents my work of studying the flow in a hydrocyclone using positron emission particle tracking (PEPT) and computational fluid dynamics (CFD) simulation. Hydrocyclone separators are a type of cyclone separators ... -
Study of the hard double-parton scattering contribution to inclusive four-lepton production in pp collisions at √s=8 TeV with the ATLAS detector
(Peer reviewed; Journal article, 2019-03-10)The inclusive production of four isolated charged leptons in pp collisions is analysed for the presence of hard double-parton scattering, using 20.2 fb−1 of data recorded in the ATLAS detector at the LHC at centre-of-mass ... -
Study of the process e+e- →π+π-π0 using initial state radiation with BABAR
(Journal article; Peer reviewed, 2021)The process e+e−→π+π−π0γ is studied at a center-of-mass energy near the Υ(4S) resonance using a data sample of 469 fb−1 collected with the BABAR detector at the PEP-II collider. We have performed a precise measurement of ... -
Study of the rare decays of B_s^0 and B^0 mesons into muon pairs using data collected during 2015 and 2016 with the ATLAS detector
(Peer reviewed; Journal article, 2019-04-15)A study of the decays B 0s → μ+μ− and B0 → μ+μ− has been performed using 26.3 fb−1 of 13 TeV LHC proton-proton collision data collected with the ATLAS detector in 2015 and 2016. Since the detector resolution in μ+μ− invariant ... -
Study of the reactions e + e − → 2ðπ + π − Þπ0π0π0 and 2ðπ + π − Þπ0π0η at center-of-mass energies from threshold to 4.5 GeV using initial-state radiation
(Journal article; Peer reviewed, 2021)We study the processes e+e−→2(π+π−)π0π0π0γ and 2(π+π−)π0π0ηγ in which an energetic photon is radiated from the initial state. The data were collected with the BABAR detector at SLAC. About 14 000 and 4700 events, respectively, ... -
Study of the reactions e + e − → π + π − π0π0π0π0 and π + π − π0π0π0η at center-of-mass energies from threshold to 4.5 GeV using initial-state radiation
(Journal article; Peer reviewed, 2021)We study the processes e+e−→π+π−π0π0π0π0γ and π+π−π0π0π0ηγ in which an energetic photon is radiated from the initial state. The data were collected with the BABAR detector at the SLAC National Accelerator Laboratory. About ... -
Study of the Λ–Λ interaction with femtoscopy correlations in pp and p–Pb collisions at the LHC
(Peer reviewed; Journal article, 2019-10-10)This work presents new constraints on the existence and the binding energy of a possible Λ–Λ bound state, the H-dibaryon, derived from Λ–Λ femtoscopic measurements by the ALICE collaboration. The results are obtained from ... -
A study of transfer rates of phenols from caustic to crude oil
(Peer reviewed; Journal article, 2019-04)Phenol and phenolic compounds are a common problem in various industries, due to their ability to dissolve in aqueous solutions, such as caustic. Caustic is used in several industrial operations for pH adjustments and for ... -
Study of very forward energy and its correlation with particle production at midrapidity in pp and p-Pb collisions at the LHC
(Journal article; Peer reviewed, 2022)The energy deposited at very forward rapidities (very forward energy) is a powerful tool for characterising proton fragmentation in pp and p-Pb collisions. The correlation of very forward energy with particle production ...