Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2007-10-14
ECONF C0705302:HIG17,2007
Physics
High Energy Physics
High Energy Physics - Phenomenology
Submitted for the LCWS07 proceedings, 5 pages, 4 eps figures, ilcws07.cls, references added
Scientific paper
Measurement of the top-Yukawa coupling is important to understand the fermion mass generation mechanism and dynamics of electroweak symmetry breaking. We discuss the top quark anomalous couplings which can be described by higher dimensional operators. We investigate the process $e^-e^+ \to W^-W^+\nu\bar\nu \to t \bar t \nu\bar\nu$ to study the contribution of the anomalous top-Higgs coupling to the cross section. The effect of the dimension-six top-Higgs interaction on the cross section can be a few hundred percent greater than the SM prediction. Such a large effect can be measured at the International Linear Collider.
Kanemura Shinya
Matsuda Koichi
Nomura Daisuke
Tsumura Koji
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