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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 proton-antiproton 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 inverse pb with an observable high transverse momentum photon and large transverse missing energy. The 70 observed events are consistent with photons produced by standard known reactions plus other background processes produced by cosmic muons. The mass limits on the fundamental mass scale at 95% confidence level for large extra dimensions of 2, 4, 6 and 8 are 500 GeV, 581 GeV, 630 GeV, and 668 GeV respectively.
Large Extra Dimensions, Search, Proton-Antiproton Collisions, Photon
Date of Defense
April 28, 2006.
A Dissertation submitted to the Department of Physics in partial fulfillment of the requirements for the degree of Doctor of Philosophy.
Includes bibliographical references.
Vasken Hagopian, Professor Co-Directing Dissertation; Sharon Hagopian, Professor Co-Directing Dissertation; Gregory A. Riccardi, Outside Committee Member; Howard Baer, Committee Member; Simon Capstick, Committee Member.
Florida State University
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