For our purposes we then replace δ→± 1/α′ where we are free to choose signs thanks to (20)

for the δ-shift regarding which X-variables need to be shifted to obtain a given mixed amplitude

1 Pith paper cite this work. Polarity classification is still indexing.

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hep-th · 2025-05-02 · conditional · novelty 6.0

Pion and colored scalar amplitudes are two readings of the same inverse KLT kernel, related by the alpha-prime shift.

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Universality of Colored Scalars from the Stringy KLT Kernel hep-th · 2025-05-02 · conditional · none · ref 7
Pion and colored scalar amplitudes are two readings of the same inverse KLT kernel, related by the alpha-prime shift.