Observing the Coupling between Dark Matter and Higgs Boson at the ILC

Abstract

One of the main purposes on physics at the International Linear Collider (ILC) is to study the property of dark matter such as its mass, spin, and interactions between the dark matter and particles in the standard model. Among those, the interaction between dark matter and higgs boson is important, because, if the dark matter is a weakly interacting massive particle, the existence of the dark matter is expected to relate to physics of electroweak symmetry breaking. In addition, the interaction plays an important role at direct detection experiments of dark matter. In this report, we discuss how accurately the coupling constant of the interaction can be measured at the ILC with the center of mass energy less than 500 GeV.

6 pages, 1 figure, Proceeding of LCWS/ILC2010

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• First Dark Matter Results from the XENON100 Experiment
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• Testing Higgs portal dark matter via $Z$ fusion at a linear collider
• Probing Higgs portals with matrix-element based kinematic discriminants in $ZZ\to 4\ell$ production