The two-loop helicity amplitudes for gg → V1V2 → 4 leptons
The two-loop helicity amplitudes for gg → V1V2 → 4 leptons
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gg → V1V2 → 4 轻子的双环螺旋振幅
DOI：
10.1007/jhep06(2015)197
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发表时间：
2015
影响因子：
5.4
通讯作者：
L. Tancredi
中科院分区：
文献类型：
--
作者：
A. von Manteuffel;L. Tancredi
我们计算了胶子融合通道gg→ V1V2中产生两个电弱规范玻色子的螺旋度振幅的双圈无质量QCD修正，保持矢量玻色子V1和V2的虚性是任意的，并考虑了它们衰变为轻子的情况.振幅表示的主积分，其表示已被优化的快速和可靠的数值计算。我们在http：//vvamp上提供了分析结果和公共C++代码，用于在HepForge上进行数值评估。赫普福奇。org.
We compute the two-loop massless QCD corrections to the helicity amplitudes for the production of two electroweak gauge bosons in the gluon fusion channel, gg→ V 1 V 2, keeping the virtuality of the vector bosons V 1 and V 2 arbitrary and taking their decays into leptons into account. The amplitudes are expressed in terms of master integrals, whose representation has been optimised for fast and reliable numerical evaluation. We provide analytical results and a public C++ code for their numerical evaluation on HepForge at http://vvamp. hepforge. org.