8 Matching Results

Search Results

Results: 1 - 8
open access

The Pion Charge Form Factor Through Pion Electroproduction

Description: The goal of Jefferson Lab experiment E01-004 (F?-2) was the measurement of the longitudinal and transverse cross sections via pion electroproduction from hydrogen and deuterium for the purpose of extracting the charged pion form factor using pole dominance. The data were taken at two values of Q2 (1.60 and 2.45 GeV/c)2. In order to attain full coverage in R?, charged pions were detected in parallel kinematics (along the direction of momentum transfer, q), and at ±3 degrees off the direction of… more
Date: April 1, 2006
Creator: Horn, Tanja
Partner: UNT Libraries Government Documents Department
open access

Search for new physics in electron-tau final states in proton - antiproton collisions at 1.96 TeV

Description: During the last decades, particle physicists have studied the tiniest building blocks of matter--the quarks and the leptons--and the forces between them in great detail. From these experiments, a theoretical framework has been built that describes the observed results with high precision. The achievement of this theory, which is referred to as the Standard Model of elementary particle physics, was the elaboration of a unified description of the strong, weak and electromagnetic forces in the fra… more
Date: April 1, 2006
Creator: Noeding, Carsten
Partner: UNT Libraries Government Documents Department
open access

Electroweak Production of the Top Quark in the Run II of the D0 Experiment

Description: The work exposed in this thesis deals with the search for electroweak production of top quark (single top) in proton-antiproton collisions at {radical}s = 1.96 TeV. This production mode has not been observed yet. Analyzed data have been collected during the Run II of the D0 experiment at the Fermilab Tevatron collider. These data correspond to an integrated luminosity of 370 pb{sup -1}. In the Standard Model, the decay of a top quark always produce a high momentum bottom quark. Therefore bottom… more
Date: April 1, 2006
Creator: Clement, Benoit & /Strasbourg, IReS
Partner: UNT Libraries Government Documents Department
open access

Search for large extra dimensions in the exclusive photon + missing energy channel in p anti-p collisions

Description: A search was conducted for evidence of large extra dimensions (LED) at Fermi National Accelerator Laboratory's Tevatron using the D0 detector. The Tevatron is a p{bar p} collider at a center of mass energy of 1.96 TeV. Events with particles escaping into extra dimensions will have large missing energy. The search was carried out using data from a total luminosity of 197 {+-} 13 pb{sup -1} with an observable high transverse momentum photon and a large transverse missing energy. The 70 observed e… more
Date: April 1, 2006
Creator: Lazoflores, Jose A.
Partner: UNT Libraries Government Documents Department
open access

Top quarks at the Tevatron: Measurements of the top quark production and decay with the D0 experiment

Description: This thesis presents two measurements of the to pquark using 230 pb{sup -1} of data recorded with the D0 detector at the Tevatron accelerator. The first measurement determines the top pair production cross section at {radical}s = 1.96 TeV in proton-antiproton collisions. In the standard model of particle physics the top quark decays almost exclusively into a W boson and a b quark. Candidate events are selected by requiring that at least one jet in the event is tagged with the secondary vertex a… more
Date: April 1, 2006
Creator: Strandberg, Jonas & U., /Stockholm
Partner: UNT Libraries Government Documents Department
open access

Diffractively produced Z bosons in the muon decay channel in p-pbar collisions at s**(1/2) = 1.96 TeV, and the measurement of the efficiency of the D0 Run II luminosity monitor

Description: The first analysis of diffractively produced Z bosons in the muon decay channel is presented, using data taken by the D0 detector at the Tevatron at {radical}s = 1.96 TeV. The data sample corresponds to an integrated luminosity of 109 pb{sup -1}. The diffractive sample is defined using the fractional momentum loss {zeta} of the intact proton or antiproton measured using the calorimeter and muon detector systems. In a sample of 10791 (Z/{gamma})* {yields} {mu}{sup +}{mu}{sup -} events, 24 diffra… more
Date: April 1, 2006
Creator: Edwards, Tamsin L.
Partner: UNT Libraries Government Documents Department
open access

Low Emittance Electron Beam Studies

Description: We have studied the properties of a low emittance electron beam produced by laser pulses incident onto an rf gun photocathode. The experiments were carried out at the A0 photoinjector at Fermilab. Such beam studies are necessary for fixing the design of new Linear Colliders as well as for the development of Free Electron Lasers. An overview of the A0 photoinjector is given in Chapter 1. In Chapter 2 we describe the A0 photoinjector laser system. A stable laser system is imperative for reliable … more
Date: April 1, 2006
Creator: Tikhoplav, Rodion
Partner: UNT Libraries Government Documents Department
Back to Top of Screen