arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1111.0556hep-phhep-ex
收藏

对QCD分解的新认识

New look at the QCD factorization

B. I. Ermolaev, M. Greco, S. I. Troyan

摘要:

我们证明了DIS结构函数的k_T分解和共线分解都可以通过康普顿散射振幅的连续约化得到。每一种简化都是在某些假设下有效的近似。特别地,当微扰和非微扰的部分子的虚性是类空的时,到k_T-因子分解的转变是可能的。然后,如果部分子分布在k_T中有一个尖锐的极大值,则k_T分解可以归结为共线分解。

英文摘要:

We show that both the k_T- and collinear factorization for the DIS structure functions can be obtained by consecutive reductions of the Compton scattering amplitude. Each of these reductions is an approximation valid under certain assumptions. In particular, the transitions to the k_T- factorization is possible when the virtualities of the partons connecting the perturbative and non-perturbative blobs are space-like. Then, if the parton distribution has a sharp maximum in k_T, the k_T factorization can be reduced to the collinear factorization.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑