String-motivated one-loop amplitudes in gauge theories with half-maximal 
supersymmetry

Berg, Marcus; Buchberger, Igor; Schlotterer, Oliver

doi:10.1007/JHEP07(2017)138

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String-motivated one-loop amplitudes in gauge theories with half-maximal supersymmetry

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Schlotterer, Oliver
Quantum Gravity and Unified Theories, AEI Golm, MPI for Gravitational Physics, Max Planck Society;

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Citation

Berg, M., Buchberger, I., & Schlotterer, O. (2017). String-motivated one-loop amplitudes in gauge theories with half-maximal supersymmetry. Journal of high energy physics: JHEP, 2017(07): 138. doi:10.1007/JHEP07(2017)138.

Cite as: https://hdl.handle.net/11858/00-001M-0000-002C-3875-0

Abstract

We compute one-loop amplitudes in six-dimensional Yang-Mills theory with half-maximal supersymmetry from first principles: imposing gauge invariance and locality on an ansatz made from string-theory inspired kinematic building blocks yields unique expressions for the 3- and 4-point amplitudes. We check that the results are reproduced in the field-theory limit $\alpha' \rightarrow 0$ of string amplitudes in K3 orbifolds, using simplifications made in a companion string-theory paper 1603.05262.