Li King Fai = 額外次元模型內由額外力所導致的可測結果 / 李敬輝. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2006. / Includes bibliographical references (leaves 101-105). / Text in English; abstracts in English and Chinese. / Li King Fai = E wai ci yuan mo xing nei you e wai li suo dao zhi de ke ce jie guo / Li Jinghui. / Chapter 1 --- Prologue --- p.1 / Chapter 1.1 --- Research Background --- p.1 / Chapter 1.2 --- Statement of the Problem --- p.4 / Chapter 1.3 --- Organization of the Thesis --- p.5 / Chapter 2 --- Review of Various Extra Dimensional Models --- p.6 / Chapter 2.1 --- General Relativity --- p.6 / Chapter 2.2 --- Kaluza-Klein Theory --- p.9 / Chapter 2.3 --- Space-Time-Matter Theory --- p.13 / Chapter 2.4 --- Arkani-Hamed-Dimopoulos-Dvali Scenario --- p.16 / Chapter 2.5 --- Randall-Sundrum Scenario --- p.19 / Chapter 3 --- Review of Extra Forces --- p.27 / Chapter 3.1 --- Definition of Force in 4D --- p.27 / Chapter 3.2 --- Extra Forces in STM Theory --- p.28 / Chapter 3.3 --- Variation of4D Mass --- p.31 / Chapter 3.4 --- Position-Momentum Uncertainty Relation --- p.32 / Chapter 3.5 --- Extra Forces in Brane Theories --- p.34 / Chapter 4 --- Extra Forces in the 5D Friedmann Universe --- p.37 / Chapter 4.1 --- Generalized Robertson-Walker Metric --- p.38 / Chapter 4.2 --- Unobserved Motions in Extra Dimensions --- p.43 / Chapter 4.3 --- Equations of Motion with Three Extra Spatial Dimensions --- p.51 / Chapter 4.4 --- Summary --- p.53 / Chapter 5 --- Extra Forces in the Randall-Sundrum Model --- p.55 / Chapter 5.1 --- Model Development - Evolving Extra Dimension --- p.56 / Chapter 5.2 --- Classical Particle Trajectories --- p.59 / Chapter 5.3 --- Unobserved Motions in Extra Dimensions --- p.66 / Chapter 5.4 --- Modification of RSI model --- p.72 / Chapter 5.5 --- Summary --- p.77 / Chapter 6 --- Comments on Extra Forces as the Source of Quantum Fluctuations --- p.78 / Chapter 7 --- Particle-Antiparticle Pairs as an Observable Effect of Extra Force --- p.80 / Chapter 7.1 --- Reasons for Antiparticles --- p.81 / Chapter 7.2 --- Attempts in Classical Physics --- p.85 / Chapter 7.3 --- 5D Kaluza-Klein Scenario --- p.86 / Chapter 7.4 --- Generalizations to Brane Theories --- p.89 / Chapter 7.5 --- Summary --- p.97 / Chapter 8 --- A Summary of this Thesis --- p.99 / Bibliography --- p.101

No description available.

Ph.D. (Physics) / Please refer to full text to view abstract

Thesis (M.Sc.)--Memorial University of Newfoundland, 2005. / Bibliography: leaves 133-138.

No description available.

Experiment E683 at Fermi National Accelerator Laboratory (FNAL) in Batavia, Illinois, uses a modular, high-energy sampling calorimeter as the basis of the detector system. This detector provides information on the energy and position of particles that exit a collision of a photon or pion with a target proton. While exiting particles are thought to form what are described as "jets", and several E683 projects involve working with these jets, it has not yet been demonstrated that jets indeed have been detected.The solution proposed here involves demonstrating that E683 data has a statistically significant "jettiness" even in a data sample which has not been biased. Towards this, a data sample was selected based on criteria unrelated to the presumption of jets. Planarity and the Et Flow were chosen as measures of how oblong(jetlike) an event is. The sample was then examined for planarity and Et flow in a number of kinematic ranges and the results demonstrate that over a certain kinematic range, events in our sample are increasingly planar, as we hypothesized. / Department of Physics and Astronomy

The subject of this thesis is the improvement of particle tracking through the identification and correction of small systematic errors in particle "hit" locations due to positioning of tracking detectors. These errors call be as large or larger than the statistical spatial resolution of tracking detectors themselves, and therefore must be corrected. The focus is on identification and correction of errors due to rotations and beam axis translations.An algorithm is developed for use with proportional wire chamber and drift chamber detectors in experiment E683 at the Wideband facility of Fermi National Laboratory. In this experiment, high energy (tens of GeV) particles, primarily mesons, were produced when photons with energies of 40-400 GeV struck a metal or liquid target.At the present time, the method and code developed for this thesis has not been applied to real data, although an analysis of its effectiveness as a function of detector resolution has been investigated with Monte-Carlo simulations. / Department of Physics and Astronomy

Orientador: Julio Cesar Hadler Neto / Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Física Gleb Wataghin / Made available in DSpace on 2018-08-15T08:30:20Z (GMT). No. of bitstreams: 1 Pereira_OsvaldoLuizdosSantos_M.pdf: 6453293 bytes, checksum: 6ae2b987d494a6587014b4c55b607120 (MD5) Previous issue date: 2010 / Resumo: Neste trabalho foi realizado estudo comparativo entre as respostas de três monitores, o NRPB, o monitor de acrílico (geometria filme fino) e o monitor de alumínio (geometria filme fino), em exposições controladas e mistas. As exposições consistiram em colocar os monitores em uma campânula com uma fonte de rádio-226 interna. Os detectores CR-39 analisados foram todos internos aos monitores. Foi concluido que os monitores em geometria de filme fino forneceram atividades da ordem de 15% inferior ao NRPB. Todos os monitores responderam da mesma forma, quando em ambiente controlado. E em relação ao tipo de material, plástico condutor ou plástico dielétrico, do NRPB, responderam da mesma maneira, em ambientes sem ventilação. O monitor confeccionado com material condutor responde da mesma forma que aquele confeccionado com material dielétrico / Abstract: This work was a comparative study between the responses of three monitors, the NRPB, an acrylic monitor (in thin film geometry) and the aluminum monitor (also thin film geometry) in controled and mixed environment. The experiments consisted on placing the monitors in a plastic tube, with a radio-226 source internal. Only internal CR-39 plastic detectors were analyzed in this work. It was found that the monitors in thin film geometry had activities response of approximately 15% less than the NRPB monitors. All monitors responded the same way when in controlled environment. Related to the type of material, conductive plastic or dielectric (insulator) plastic, the NRPB, in environments without ventilation, responded in the same way / Mestrado / Física Nuclear / Mestre em Física