# Sökning: "Physics"

Visar resultat 1 - 5 av 4003 avhandlingar innehållade ordet Physics.

1. ## 1. Searches for Particle Dark Matter Dark stars, dark galaxies, dark halos and global supersymmetric fits

Detta är en avhandling från Stockholm : Department of Physics, Stockholm University

Sammanfattning : The identity of dark matter is one of the key outstanding problems in both particle and astrophysics. In this thesis, I describe a number of complementary searches for particle dark matter. LÄS MER

2. ## 2. Aspects of Hadron Production in High-Energy Heavy-Ion Physics

Detta är en avhandling från Department of Physics, Lund University

Sammanfattning : High-energy heavy-ion collisions provide a unique tool for the study of nuclear matter as a function of temperature and density. WA98 at the CERN SPS recorded data with a 158 A GeV Pb beam on a Pb target in 1996. To cope with the high charged-particle density, a tracking system based on high granularity multi-step avalanche detectors was developed. LÄS MER

3. ## 3. Studies of Top Physics Sensitivity and of Pile-Up Effects on Energy Reconstruction in the ATLAS Detector : A Licentiate Thesis About the Treatment of Troublesome $\tau$ and Producing Pulses to Probe Pile-up Problems

Detta är en avhandling från Stockholm : Department of Physics, Stockholm University

Sammanfattning : This thesis presents two studies conducted using the ATLAS detectorat the Large Hadron Collider. The first one is a technical study abouthow out-of-time pile-up affects energy reconstruction using the optimalfiltering 2 algorithm in the TILE calorimeter sub detector. The studyis conducted using a pulse simulator software that is also described. LÄS MER

4. ## 4. Dosimetric effects of breathing motion in radiotherapy

Detta är en avhandling från Lund University, Faculty of Science, Department of Medical Radiation Physics

Sammanfattning : Cirka hälften av alla som drabbas av cancer i Sverige genomgår strålbehandling, där högenergetisk strålning används för att tillintetgöra cancertumören. Inför strålbehandlingen görs en datortomografiundersökning, vilket är en form av röntgenundersökning som ger snittbilder av patienten i tre dimensioner. LÄS MER

5. ## 5. Physics at the High-Energy Frontier Phenomenological Studies of Charged Higgs Bosons and Cosmic Neutrino Detection

Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

Sammanfattning : The Standard Model of particle physics successfully describes present collider data. Nevertheless, theoretical and cosmological results call for its extension. A softly broken supersymmetric completion around the TeV scale solves several of the outstanding issues. Supersymmetry requires two Higgs doublets, leading to five physical Higgs states. LÄS MER