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On-shell constructibility of Born amplitudes in spontaneously broken gauge theories

Abstract

We perform a comprehensive study of on-shell recursion relations for Born amplitudes in spontaneously broken gauge theories and identify the minimal shifts required to construct amplitudes with a given particle content and spin quantum numbers. We show that two-line or three-line shifts are sufficient to construct all amplitudes with five or more particles, apart from amplitudes involving longitudinal vector bosons or scalars, which may require at most five-line shifts. As an application, we revisit selection rules for multi-boson amplitudes using on-shell recursion and little-group transformations.

A preprint version of the article is available at ArXiv.

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Correspondence to Christian Schwinn.

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ArXiv ePrint: 1910.13407

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Cite this article

Franken, R., Schwinn, C. On-shell constructibility of Born amplitudes in spontaneously broken gauge theories. J. High Energ. Phys. 2020, 73 (2020). https://doi.org/10.1007/JHEP02(2020)073

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Keywords

  • Scattering Amplitudes
  • Spontaneous Symmetry Breaking