ALL-ORDER SUMMATION AND 2-LOOP RESULTS FOR THE DRELL-YAN CROSS-SECTION

被引：42
|
作者：
MAGNEA, L [1 ]
机构：
[1] SUNY STONY BROOK,INST THEORET PHYS,STONY BROOK,NY 11794
来源：
NUCLEAR PHYSICS B | 1991年 / 349卷 / 03期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1016/0550-3213(91)90393-C
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
We compare the hard part of the Drell-Yan cross section calculated at two loops by Matsuura, van der Marck and van Neerven with the predictions obtained by using resummation techniques. We observe that the convergence of the resumed expression is very good for leading and next-to-leading logarithms, and we suggest that there is room for improvement in the understanding of the remaining singular terms. Nonetheless, we find that the resumed expression predicts the two-loop K-factor with impressive accuracy.
引用
收藏
页码：703 / 713
页数：11
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