New color decompositions for gauge amplitudes at tree and loop level

被引：305

作者：

Del Duca, V

Dixon, L

Maltoni, F

机构：

[1] Ist Nazl Fis Nucl, Sezione Torino, I-10125 Turin, Italy

[2] Stanford Univ, Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA

[3] Univ Turin, Dipartimento Fis Teor, I-10125 Turin, Italy

来源：

NUCLEAR PHYSICS B | 2000年 / 571卷 / 1-2期

关键词：

color decompositions; perturbative QCD;

D O I：

10.1016/S0550-3213(99)00809-3

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：

Recently, a color decomposition using structure constants was introduced for purely gluonic tree amplitudes, in a compact form involving only the linearly independent subamplitudes. We give two proofs that this decomposition holds for an arbitrary number of gluons, We also present and prove similar decompositions at one loop, both for purl gluon amplitudes and for amplitudes with an external quark-antiquark pair. (C) 2000 Elsevier Science B.V. All rights reserved.

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页码：51 / 70

页数：20

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