Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2005-12-22
Physics
High Energy Physics
High Energy Physics - Phenomenology
PhD Theses, ~150pages
Scientific paper
In absence of the Standard Model Higgs boson the interaction among the gauge bosons becomes strong at high energies and influences the couplings between them. Each trilinear and quartic gauge boson vertex is characterised by a set of couplings which are expected to deviate from their Standard Model values already at energies lower than the energy scale of the New Physics.The precise measurement of gauge boson couplings can provide clues to the mechanism of the electroweak symmetry breaking and their anomalous values can be a sign of a New Physics effect beyond the Standard Model. The estimated precisions of the trilinear gauge boson coupling (TGC) measurements at a photon collider are about one to two orders of magnitude higher than at LEP and Tevatron providing a measurement highly sensitive to the physics beyond the Standard Model. The optimisation of the forward region of the photon collider detector brings the amount of the low-energy background to the manageable level providing a clean environment for the TGC measurements at a photon collider with estimated precisions.
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