R E C O L A - REcursive Computation of One-Loop Amplitudes

被引：161

作者：

Actis, Stefano ^{[1
]}

Denner, Ansgar ^{[2
]}

Hofer, Lars ^{[3
]}

Lang, Jean-Nicolas ^{[2
]}

Scharf, Andreas ^{[2
]}

Uccirati, Sandro ^{[4
,5
]}

机构：

[1] Lilienstr 7, Brugg Ag, Switzerland

[2] Univ Wurzburg, Inst Theoret Phys & Astrophys, D-97074 Wurzburg, Germany

[3] Univ Barcelona, Inst Ciencies Cosmos ICCUB, Dept Fis Quant & Astrofis FQA, Marti Franques 1, E-08028 Barcelona, Spain

[4] Univ Turin, I-10125 Turin, Italy

[5] Ist Nazl Fis Nucl, I-10125 Turin, Italy

来源：

COMPUTER PHYSICS COMMUNICATIONS | 2017年 / 214卷

关键词：

NLO computations; One-loop amplitudes; Higher orders; ELECTROWEAK CORRECTIONS; UNITARITY; INTEGRALS; PACKAGE;

D O I：

10.1016/j.cpc.2017.01.004

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

We present the FORTRAN95 program RECOLA for the perturbative computation of next-to-leading-order transition amplitudes in the Standard Model of particle physics. The code provides numerical results in the 't Hooft-Feynman gauge. It uses the complex-mass scheme and allows for a consistent isolation of resonant contributions. Dimensional regularization is employed for ultraviolet and infrared singularities, with the alternative possibility of treating collinear and soft singularities in mass regularization. RECOLA supports various renormalization schemes for the electromagnetic and a dynamical N-f-flavour scheme for the strong coupling constant. The calculation of next-to-leading-order squared amplitudes, summed over spin and colour, is supported as well as the computation of colour- and spin-correlated leading-order squared amplitudes needed in the dipole subtraction formalism. (C) 2017 Published by Elsevier B.V.

引用

页码：140 / 173

页数：34

共 74 条

[51] Feynman rules for the rational part of the electroweak 1-loop amplitudes [J].