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arXiv 1104.2280hep-thhep-ph
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大质量多重态的在壳超对称性

On-shell supersymmetry for massive multiplets

Rutger H. Boels, Christian Schwinn

摘要:

研究了四维空间中大质量粒子散射振幅的壳层上超对称性。利用旋量螺旋度形式主义的质量版本的超对称变换直接从壳层上的超对称代数的任何质量表示的产品的壳层上的状态。由此得到的沃德恒等式的解可以构造为从相干态方法获得的壳层超空间上的函数。在简单的情况下,它表明,这些超空间允许一个明确的超对称散射振幅。介绍了含重粒子的树能级超振幅的超对称在壳层递推关系。作为例子,在SQCD、Abel Higgs模型、N=4超Yang-Mills的库仑分支、具有有效Higgs-胶子耦合的QCD和大质量矢量玻色子流中构造了简单的超对称振幅。

英文摘要:

The consequences of on-shell supersymmetry are studied for scattering amplitudes with massive particles in four dimensions. Using the massive version of the spinor helicity formalism the supersymmetry transformations relating products of on-shell states are derived directly from the on-shell supersymmetry algebra for any massive representation. Solutions to the resulting Ward identities can be constructed as functions on the on-shell superspaces that are obtained from the coherent state method. In simple cases it is shown that these superspaces allow one to construct explicitly supersymmetric scattering amplitudes. Supersymmetric on-shell recursion relations for tree-level superamplitudes with massive particles are introduced. As examples, simple supersymmetric amplitudes are constructed in SQCD, the Abelian Higgs model, the Coulomb branch of N=4 super Yang-Mills, QCD with an effective Higgs-gluon coupling and for massive vector boson currents.

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