HELAS and MadGraph/MadEvent with spin-2 particles

被引：0
|
作者：
K. Hagiwara
J. Kanzaki
Q. Li
K. Mawatari
机构：
[1] KEK,Institut für Theoretische Physik
[2] Theory Division and Sokendai,School of Physics
[3] KEK,undefined
[4] Universität Karlsruhe,undefined
[5] Korea Institute for Advanced Study,undefined
来源：
The European Physical Journal C | 2008年 / 56卷
关键词：
Vector Boson; Helicity Amplitude; Scalar Boson; Massive Graviton; General Coordinate Transformation;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Fortran subroutines to calculate helicity amplitudes with massive spin-2 particles (massive gravitons), which couple to the standard model particles via the energy momentum tensor, are added to the HELAS (HELicity Amplitude Subroutines) library. They are coded in such a way that arbitrary scattering amplitudes with one graviton production and its decays can be generated automatically by MadGraph and MadEvent, after slight modifications. All the codes have been tested carefully by making use of the invariance of the helicity amplitudes under the gauge and general coordinate transformations.
引用
收藏
页码：435 / 447
页数：12
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