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arXiv · 1605.07402

Spinor-Helicity Three-Point Amplitudes from Local Cubic Interactions

Eduardo Conde·Euihun Joung·Karapet Mkrtchyan
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Abstract

We make an explicit link between the cubic interactions of off-shell fields and the on-shell three-point amplitudes in four dimensions. Both the cubic interactions and the on-shell three-point amplitudes had been independently classified in the literature, but their relation has not been made explicit. The aim of this note is to provide such a relation and discuss similarities and differences of their constructions. For the completeness of our analysis, we also derive the covariant form of all parity-odd massless vertices.

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Eduardo Conde, Euihun Joung, Karapet Mkrtchyan. 2016-05-24. Spinor-Helicity Three-Point Amplitudes from Local Cubic Interactions. https://doi.org/10.1007/jhep08(2016)040

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