$Q^2$ dependence of chiral-odd twist-3 distribution $e(x,Q^2)$

Details $Q^2$ dependence of chiral-odd twist-3 distribution $e(x,Q^2)$ $Q^2$ dependence of chiral-odd twist-3 distribution $e(x,Q^2)$

1996-10-20

arxiv.org/abs/hep-ph/9610422v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

latex, 3 pages, no figures, Talk presented at Spin'96

Scientific paper

We discuss 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 wholely 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 $h_L$.

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