Bjerrum-Bohr, N. Emil J.Brown, Taro V.Gomez, Humberto2025-07-182025-07-182021Bjerrum-Bohr, N. E. J., Brown, T. v., & Gomez, H. (2021). Scattering of gravitons and spinning massive states from compact numerators. Journal of High Energy Physics, 2021(4). https://doi.org/10.1007/JHEP04(2021)23410298479https://repositorio.usc.edu.co/handle/20.500.12421/7533We provide a new efficient diagrammatic tool, in the context of the scattering equations, for computation of covariant D-dimensional tree-level n-point amplitudes with pairs of spinning massive particles using compact exponential numerators. We discuss how this framework allows non-integer spin extensions of recurrence relations for amplitudes developed for integer spin. Our results facilitate the on-going program for generating observables in classical general relativity from on-shell tree amplitudes through the Kawai-Lewellen-Tye relations and generalized unitarity.enDuality in Gauge Field TheoriesScattering AmplitudesArticle