Generalized Unitarity and Six-Dimensional Helicity - High Energy Physics - TheoryReport as inadecuate




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Abstract: We combine the unitarity method with the six-dimensional helicity formalismof Cheung and O-Connell to construct loop-level scattering amplitudes. As afirst example, we construct dimensionally regularized QCD one-loop four-pointamplitudes. As a nontrivial multiloop example, we confirm that the recentlyconstructed four-loop four-point amplitude of N=4 super-Yang-Mills theory,including nonplanar contributions, is valid for dimensions less than or equalto six. We comment on the connection of our approach to the recently discussedHiggs infrared regulator and on dual conformal properties in six dimensions.



Author: Zvi Bern, John Joseph Carrasco, Tristan Dennen, Yu-tin Huang, Harald Ita

Source: https://arxiv.org/



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