From Tree Unitarity to Top Quark Physics in 5D Higgsless Models

6533b85efe1ef96bd12bfed6

RESEARCH PRODUCT

From Tree Unitarity to Top Quark Physics in 5D Higgsless Models

Christian Schwinn

subject

Quark Physics Condensed Matter::Quantum Gases High Energy Physics - Theory Gauge boson Top quark Particle physics Unitarity Spontaneous symmetry breaking High Energy Physics::Lattice High Energy Physics::Phenomenology FOS: Physical sciences Technicolor Higgs field High Energy Physics::Theory High Energy Physics - Phenomenology High Energy Physics - Phenomenology (hep-ph)High Energy Physics - Theory (hep-th)Higgs boson High Energy Physics::Experiment

description

In five dimensional models of Higgsless electroweak symmetry breaking, tree level unitarity in gauge boson scattering is restored by the exchange of gauge boson Kaluza-Klein modes instead of a Higgs boson. Unitarity of scattering amplitudes involving top quarks requires also the Kaluza-Klein modes of the third family quarks. It is shown that the relevant unitarity cancellations are consistent with gauge symmetry breaking by boundary conditions. These results are used to constrain the couplings of the top quark to Kaluza-Klein modes and the implications for collider phenomenology are discussed.

year	journal	country	edition	language
2005-09-26

http://arxiv.org/abs/hep-ph/0509290

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