Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2010-07-29
Physics
High Energy Physics
High Energy Physics - Phenomenology
10 pages, 4 figures. Invited talk at the LCWS/ILC 2010 in Beijing, China, March 2010
Scientific paper
We review the physics potential of top mass measurements and the GigaZ/MegaW options of the International Linear Collider (ILC) for probing New Physics models and especially the Minimal Supersymmetric Standard Model (MSSM). We demonstrate that the anticipated experimental accuracies at the ILC for the top-quark mass, m_t, the W boson mass, M_W, and the effective leptonic weak mixing angle, sin^2 theta_eff, will provide a high sensitivity to quantum effects of New Physics. In particular, a new and more precise measurement of sin^2 theta_eff, for which the experimental central value is currently obtained from an average where the most precise single measurements differ by more than three standard deviations, could lead to a situation where both the Standard Model and the MSSM in its most general form are ruled out. Alternatively, the precision measurements may resolve virtual effects of SUSY particles even in scenarios where the SUSY particles are so heavy that they escape direct detection at the LHC and the first phase of the ILC.
Heinemeyer Sven
Weiglein Georg
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