Electroweak symmetry breaking and new physics at the TeV scale

This is an expanded version of the report by the Electroweak Symmetry Breaking and Beyond the Standard Model Working Group which was contributed to Particle Physics - Perspectives and Opportunities, a report of the Division of Particles and Fields Committee for Long Term Planning. One of the Working Group&s primary goals was to study the phenomenology of electroweak symmetry breaking and attempt to quantify the "physics reach" of present and future colliders. Their investigations encompassed the Standard Model - with one doublet of Higgs scalars - and approaches to physics beyond the Standard