A. Laptev and T. Weidl Sharp Lieb-Thirring Inequalities in High Dimensions (60K, LaTeX2e) ABSTRACT. We show how a matrix version of the Buslaev-Faddeev-Zakharov trace formulae for a one-dimensional Schr\"odinger operator leads to Lieb-Thirring inequalities with sharp constants $L^{\mbox{\footnotesize\upshape cl}}_{\gamma,d}$ with $\gamma\ge 3/2$ and arbitrary $d\ge 1$. (revised, to appear in Acta Math)