Simplifying the Tree-level Superstring Massless Five-point Amplitude

Mafra, Carlos R.

doi:10.1007/JHEP01(2010)007

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Simplifying the Tree-level Superstring Massless Five-point Amplitude

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Mafra, Carlos R.
Quantum Gravity & Unified Theories, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

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0909.5206v1.pdf
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JHEP01(2010)007.pdf
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Mafra, C. R. (2010). Simplifying the Tree-level Superstring Massless Five-point Amplitude. Journal of High Energy Physics, 2010(1): 007. doi:10.1007/JHEP01(2010)007.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0013-6106-C

Abstract

We use the pure spinor formalism to obtain the supersymmetric massless five-point amplitude at tree-level in a streamlined fashion. We also prove the equivalence of an OPE identity in string theory with a subset of the Bern-Carrasco-Johansson five-point kinematic relations, and demonstrate how the remaining BCJ identities follow from the different integration regions over the open string world-sheet, therefore providing a first principles derivation of the (supersymmetric) BCJ identities.