Sökning: "fysik"
Visar resultat 21 - 25 av 6349 avhandlingar innehållade ordet fysik.
21. Design of the HIBEAM/NNBAR Calorimeter and Upgrades to the ATLAS Tile Calorimeter Readout Electronics
Sammanfattning : The Standard Model has been greatly successful in predicting the laws that govern our universe. Yet there are still seemingly missing pieces to the model. LÄS MER
22. Quantum transport and spin effects in lateral semiconductor nanostructures and graphene
Sammanfattning : This thesis studies electron spin phenomena in lateral semi-conductor quantum dots/anti-dots and electron conductance in graphene nanoribbons by numerical modelling. In paper I we have investigated spin-dependent transport through open quantum dots, i.e., dots strongly coupled to their leads, within the Hubbard model. LÄS MER
23. First Determination of the Electric Charge of the Top Quark and Studies of the Top Quark Pair Background to New Physics
Sammanfattning : This thesis is concerned with experimental investigations of properties of the top quark and processes involving this particle. In the first part of the thesis, the first determination of the electric charge of the top quark is presented. LÄS MER
24. Measurements of luminosity and a search for dark matter in the ATLAS experiment
Sammanfattning : This licentiate thesis presents contributions to the luminosity measurement from the data recorded by the ATLAS detector in 2017 using a track-counting technique, as well as a search for dark matter in the ATLAS experiment using 139 fb-1 of √s = 13 TeV pp collision data delivered by the LHC from 2015 to 2018. Track-counting luminosity measurements in low-luminosity operations are performed to study the effect of low collision rates on luminosity determination. LÄS MER
25. Models of SO(10) Grand Unified Theories : Yukawa Sector and Gauge Coupling Unification
Sammanfattning : .... LÄS MER