论文标题
关于大规模夸克的碰撞中红外奇异性的非现实
On the non-cancellation of infrared singularities in collisions of massive quarks
论文作者
论文摘要
我们讨论了在初始状态下具有大量夸克的过程的红外结构。众所周知，从扰动QCD中的近代到领先的顺序开始，此类过程表现出违反Bloch-Nordsieck定理的行为，因为对党派交叉部分的真实和虚拟贡献的总和包含未casse偶的红外奇异性。本文的主要目的是提出一个简单的物理论点，阐明了这些奇异性的起源，并简化了红外线贡献对重量Quark启动的横截面的推导。
We discuss the infrared structure of processes with massive quarks in the initial state. It is well known that, starting from next-to-next-to-leading order in perturbative QCD, such processes exhibit a violation of the Bloch-Nordsieck theorem, in that the sum of real and virtual contributions to partonic cross sections contains uncanceled infrared singularities. The main purpose of this paper is to present a simple physical argument that elucidates the origin of these singularities and simplifies the derivation of infrared-singular contributions to heavy-quark initiated cross sections.
