Extending the QCD Perturbative Domain to Higher Energies
摘要
After a brief introduction to low-x QCD and to resummation approaches, I illustrate the predictions for the gluon Green function and splitting function of a recent renormalization-group improved small-x resummation scheme. I argue, on this basis, that the range of validity of perturbative calculations is considerably extended in rapidity with respect to leading log expectations. The perturbative high-energy exponents are predicted in a phenomenologically interesting range, and significant preasymptotic effects are found. In particular, the splitting function shows a shallow dip in the moderate-x region, followed by the expected small-x power increase.
引用
@article{arxiv.hep-ph/0310110,
title = {Extending the QCD Perturbative Domain to Higher Energies},
author = {Marcello Ciafaloni},
journal= {arXiv preprint arXiv:hep-ph/0310110},
year = {2014}
}
备注
Talk at the International Workshop on QCD: QCD@Work2003 - International Workshop on QCD, Conversano, Italy; 7 pages, 4 figures. 14-18 June 2003