Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2003-03-21
Physics
High Energy Physics
High Energy Physics - Phenomenology
Lectures presented at the TASI 2002 Summer School, University of Colorado, Boulder, Colorado, June 2-28, 2002, 55 pages
Scientific paper
The role of the top quark in completing the Standard Model quark sector is reviewed, along with a discussion of production, decay, and theoretical restrictions on the top quark properties. Particular attention is paid to the top quark as a laboratory for perturbative QCD. As examples of the relevance of QCD corrections in the top quark sector, the calculation of $e^+e^-\to t {\bar t}$ at next-to-leading-order QCD using the phase space slicing algorithm and the implications of a precision measurement of the top quark mass are discussed in detail. The associated production of a $t {\bar t}$ pair and a Higgs boson in either $e^+e^-$ or hadronic collisions is presented at next-to-leading-order QCD and its importance for a measurement of the top quark Yukawa coupling emphasized. Implications of the heavy top quark mass for model builders are briefly examined, with the minimal supersymmetric Standard Model and topcolor discussed as specific examples.
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