Pion structure functions at 2 loops: final state interaction with spectator
高能物理 - 唯象学
2007-05-23 v1
摘要
Pion structure functions are considered in the framework of QCD sum rules at the next to leading order. The 2-loop diargam, representing the gluon exchange between the struck quark and spectator, is calculated for space-like pion momentum p^2<0. After Borel transformation we obtain a leading twist correction to the pion structure function, which does not violate Bjorken scaling. Partial results can be used in the calculation of complete set of alpha_s corrections to the pion structure functions, which may serve as an intitial condition in the evolution equation. Probabilistic interpretation of the structure functions is discussed.
引用
@article{arxiv.hep-ph/0505036,
title = {Pion structure functions at 2 loops: final state interaction with spectator},
author = {K. N. Zyablyuk},
journal= {arXiv preprint arXiv:hep-ph/0505036},
year = {2007}
}
备注
11 pages, latex