Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2002-09-30
Lect.Notes Phys. 647 (2004) 189-211
Physics
High Energy Physics
High Energy Physics - Phenomenology
23 pages, Lectures given by R. R\"uckl at the the International School ``Heavy Quark Physics,'' May 27--June 5, 2002, JINR, Du
Scientific paper
We give a pedagogical introduction to the physics of large extra dimensions. We focus our discussion on minimal extensions of the Standard Model in which gauge fields may propagate in a single, compact extra dimension while the fermions are restricted to a 4-dimensional Minkowski subspace. First, the basic ideas, including an appropriate gauge-fixing procedure in the higher-dimensional context, are illustrated in simple toy models. Then, we outline how the presented techniques can be extended to more realistic theories. Finally, we investigate the phenomenology of different minimal Standard Model extensions, in which all or only some of the SU(2)$_L$ and U(1)$_Y$ gauge fields and Higgs bosons feel the presence of the fifth dimension. Bounds on the compactification scale between 4 and 6 TeV, depending on the model, are established by analyzing existing data.
Mück Alexander
Pilaftsis Apostolos
Rückl Reinhold
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