Six-point next-to-maximally helicity-violating amplitude in maximally supersymmetric Yang-Mills theory

Six-point next-to-maximally helicity-violating amplitude in maximally supersymmetric Yang-Mills theory
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最大超对称杨-米尔斯理论中的六点次最大螺旋性破坏幅度

DOI:
10.1103/physrevd.83.065018
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发表时间:
2010
期刊:
影响因子:
5
通讯作者:
C. Vergu
C. Vergu
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
D. Kosower;R. Roiban;C. Vergu

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我们提出了一个积分表示的奇偶偶部分的两圈六点平面次最大螺旋违反振幅的费曼积分,具有简单的变换性质下的对偶共形对称。我们探测的双重共形性的振幅数值,减去已知的红外发散。我们发现,减去的振幅下的双重保角变换是不变的,确认现有的通过两个循环的顺序。我们还讨论了六点次最大螺旋违反振幅的全环结构,并给出了一个参数化,其对偶共形不变的积木有一个简单的物理解释。
We present an integral representation for the parity-even part of the two-loop six-point planar next-to-maximally helicity-violating amplitude in terms of Feynman integrals which have simple transformation properties under the dual conformal symmetry. We probe the dual conformal properties of the amplitude numerically, subtracting the known infrared divergences. We find that the subtracted amplitude is invariant under dual conformal transformations, confirming existing conjectures through two-loop order. We also discuss the all-loop structure of the six-point next-to-maximally helicity-violating amplitude and give a parametrization whose dual conformal invariant building blocks have a simple physical interpretation.
DOI: 10.1088/1126-6708/2009/11/045
发表时间: 2009-09
影响因子: 5.4
作者:
L. Mason;David Skinner
通讯作者: L. Mason;David Skinner
DOI: 10.1088/1126-6708/2009/05/046
发表时间: 2009-02
影响因子: 5.4
作者:
J. Drummond;J. Henn;J. Plefka
通讯作者: J. Drummond;J. Henn;J. Plefka