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Study of the Asymmetric Photoproduction of Charmed Mesons using Data from the FOCUS Experiment

Description: Using data from the fixed target charm-photoproduction experiment, Fermilab FOCUS/E831, they studied the asymmetric production of the mesons: D{sup 0}, D{sup +} y D{sub s}{sup +}. Even when the asymmetry in the production of charm particles, defined as the ratio between particles and antiparticles, at next leading order in quantum chromodynamics (QCD) is almost zero, in data we observe asymmetries probably associate dto the fragmentation processes. Since these are the less understood phenomena … more
Date: May 1, 2005
Creator: Vazquez-Valencia, Elsa Fabiola
Partner: UNT Libraries Government Documents Department
open access

Search for supersymetric particles desintegrant itself in R-parite violee (coupling lambda_121) in a final state has three leptons

Description: This thesis is dedicated to the study of the first data taken by the D0 detector during the Run II of the Tevatron. Supersymmetric particles have been search for in proton-antiproton collisions, with a center of mass energy of 1.96 TeV. In the framework of supersymmetry with R-parity violation, I have studied the pair production of Gauginos, leading to a pair of LSP ({chi}{sub 1}{sup 0}), each one decaying into ee{nu}{sub {mu}} or e{mu}{nu}{sub e} with a {lambda}{sub 121} coupling. The final st… more
Date: July 1, 2005
Creator: Magnan, Anne-Marie & /LPSC, Grenoble
Partner: UNT Libraries Government Documents Department
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