Q2evolution of chiral-odd twist-3 distributione(x,Q2)

We study the $Q^2$ dependence of the chiral-odd twist-3 distribution ${e(x,Q}^2)$. The anomalous dimension matrix for the corresponding twist-3 operators is calculated in the one-loop level. This study completes the calculation of the anomalous dimension matrices for all the twist-3 distributions together with the known results for the other twist-3 distributions $g_2{(x,Q}^2)$ and $h_L{(x,Q}^2)$. We also have confirmed that in the large $N_c$ limit the $Q^2$ evolution of ${e(x,Q}^2)$ is wholly governed by the lowest eigenvalue of the anomalous dimension matrix which takes a very simple analytic form as in the case of $g_2$ and $h_L.$