Parton Energy Loss at Twist-Six in Deeply Inelastic e-A Scattering
arXiv:hep-ph/0606312 · doi:10.1016/j.physletb.2006.08.034
Abstract
Within the framework of the generalized factorization in pQCD, we investigate the multiple parton scattering and induced parton energy loss at twist-6 in deeply inelastic e-A scattering with the helicity amplitude approximation. It is shown that twist-6 processes will give rise to additional nuclear size dependence of the parton energy loss due to LPM interference effect while its contribution is power suppressed.
6 pages, 2 figures