All-order results for soft and collinear gluons

Pramana

Lorenzo Magnea1¹ 

[1] Dipartimento di Fisica Teorica, Università di Torino, and INFN, Sezione di Torino, Via P. Giuria 1, I-10125 Torino, Italy$$

关键词: Quantum chromodynamics;    resummation;    gauge theories.;   

DOI  :  

学科分类：物理（综合）

来源: Indian Academy of Sciences

【 摘 要 】

Some general features and some recent developments concerning the resummation of long-distance singularities in QCD and in more general non-Abelian gauge theories are reviewed. The field-theoretical tools of the trade are emphasized, with the focus mostly on the exponentiation of infra-red and collinear divergences in amplitudes, which underlies the resummation of large logarithms in the corresponding cross-sections. Some recent results concerning the conformal limit, notably the case of 𝑁 = 4 superymmetric Yang–Mills theory are also described.

【 授权许可】

Unknown