Strangeness of the nucleon from Lattice Quantum Chromodynamics

We present a non-perturbative calculation of the strangeness of the nucleon $y_N$ within the framework of lattice QCD. This observable is known to be an important cornerstone to interpret results from direct dark matter detection experiments. We perform a lattice computation for $\yN$ with an analysis of systematic effects originating from discretization, finite size, chiral extrapolation and excited state effects leading to a value of $y_N= 0.135(46)$ which turns out to be rather small. As a main result of our work, we will demonstrate that the error for $y_N$ is dominated by systematic uncertainties