Parton Energy Loss in Collinear Expansion

Details Parton Energy Loss in Collinear Expansion Parton Energy Loss in Collinear Expansion

2008-05-12

arxiv.org/abs/0805.1649v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

Contributed to 43rd Rencontres de Moriond on QCD and High-Energy Hadronic Interactions, La Thuile, Italy, 8-15 Mar 2008. 6 pag

Scientific paper

We demonstrate that the N=1 rescattering contribution to the gluon radiation
from a fast massless quark in eA DIS vanishes in the collinear approximation.
It is shown that the nonzero N=1 gluon spectrum obtained in the higher-twist
approach by Guo, Wang and Zhang is a consequence of unjustified neglecting some
important terms in the collinear expansion.

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