%0 Journal Article %T A chaotic representation property of the multidimensional Dunkl processes %A L¨Ļonard Gallardo %A Marc Yor %J Mathematics %D 2006 %I arXiv %R 10.1214/009117906000000133 %X Dunkl processes are martingales as well as c\`{a}dl\`{a}g homogeneous Markov processes taking values in $\mathbb{R}^d$ and they are naturally associated with a root system. In this paper we study the jumps of these processes, we describe precisely their martingale decompositions into continuous and purely discontinuous parts and we obtain a Wiener chaos decomposition of the corresponding $L^2$ spaces of these processes in terms of adequate mixed multiple stochastic integrals. %U http://arxiv.org/abs/math/0609679v1