Feynman rules for the rational part of the QCD 1-loop amplitudes

被引：102

作者：

Draggiotis, P. ^{[1
]}

Garzelli, M. V. ^{[1
,3
]}

Papadopoulos, C. G. ^{[2
]}

Pittau, R. ^{[1
]}

机构：

[1] Univ Granada, Dept Fis Teor & Cosmos & CAFPE, E-18071 Granada, Spain

[2] NCSR Demokritos, Inst Nucl Phys, GR-15310 Athens, Greece

[3] Ist Nazl Fis Nucl, I-20133 Milan, Italy

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2009年 / 04期

关键词：

NLO Computations; Hadronic Colliders; QCD; Standard Model; ONE-LOOP CORRECTIONS; UNITARITY; E(+)E(-); PROGRAM;

D O I：

10.1088/1126-6708/2009/04/072

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 compute the complete set of Feynman Rules producing the Rational Terms of kind R-2 needed to perform any QCD 1-loop calculation. We also explicitly check that in order to account for the entire R-2 contribution, even in case of processes with more than four external legs, only up to four-point vertices are needed. Our results are expressed both in the 't Hooft Veltman regularization scheme and in the Four Dimensional Helicity scheme, using explicit color configurations as well as the color connection language.

引用

页数：20

共 53 条

[1] d-dimensional unitarity cut method [J].

Anastasiou, Charalampos ;

Britto, Ruth ;

Feng, Bo ;

Kunszt, Zoltan ;

Mastrolia, Pierpaolo .

PHYSICS LETTERS B, 2007, 645 (2-3) :213-216

[2] ZFITTER v.6.21:: A semi-analytical program for fermion pair production in e+e- annihilation [J].

Bardin, D ;

Bilenky, M ;

Christova, P ;

Jack, M ;

Kalinovskaya, L ;

Olchevski, A ;

Riemann, S ;

Riemann, T .

COMPUTER PHYSICS COMMUNICATIONS, 2001, 133 (2-3) :229-395

[3] Automated implementation of on-shell methods for one-loop amplitudes [J].

Berger, C. F. ;

Bern, Z. ;

Dixon, L. J. ;

Cordero, F. Febres ;

Forde, D. ;

Ita, H. ;

Kosower, D. A. ;

Maitre, D. .

PHYSICAL REVIEW D, 2008, 78 (03)

[4] Bootstrapping one-loop QCD amplitudes with general helicities [J].

Berger, Carola F. ;

Bern, Zvi ;

Dixon, Lance J. ;

Forde, Darren ;

Kosower, David A. .

PHYSICAL REVIEW D, 2006, 74 (03)

[5] One-loop self-dual and N=4 super Yang-Mills [J].

Bern, Z ;

Dixon, L ;

Dunbar, DC ;

Kosower, DA .

PHYSICS LETTERS B, 1997, 394 (1-2) :105-115

[6] Massive loop amplitudes from unitarity [J].

Bern, Z ;

Morgan, AG .

NUCLEAR PHYSICS B, 1996, 467 (03) :479-509

[7] ONE-LOOP CORRECTIONS TO 5-GLUON AMPLITUDES [J].

BERN, Z ;

DIXON, L ;

KOSOWER, DA .

PHYSICAL REVIEW LETTERS, 1993, 70 (18) :2677-2680

[8] One-loop amplitudes for e+e- to four partons [J].

Bern, Z ;

Dixon, L ;

Kosower, DA .

NUCLEAR PHYSICS B, 1998, 513 (1-2) :3-86

[9] On-shell recurrence relations for one-loop QCD amplitudes [J].

Bern, Z ;

Dixon, LJ ;

Kosower, DA .

PHYSICAL REVIEW D, 2005, 71 (10)

[10] FUSING GAUGE-THEORY TREE AMPLITUDES INTO LOOP AMPLITUDES [J].

BERN, Z ;

DIXON, L ;

DUNBAR, DC ;

KOSOWER, DA .

NUCLEAR PHYSICS B, 1995, 435 (1-2) :59-101

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