# Super-Poincare Invariant Koba-Nielsen Formulas for the Superstring

**Authors:** Nathan Berkovits  
**arXiv:** [hep-th/9604120](https://arxiv.org/abs/hep-th/9604120)  
**Date:** 1996-04-19  
**Summary page:** https://www.summarizepaper.com/fr/paper/hep-th--9604120v1/

## Abstract

The new spacetime-supersymmetric description of the superstring is used to compute tree-level scattering amplitudes for an arbitrary number of massless four-dimensional states. The resulting Koba-Nielsen formula is manifestly SO(3,1) super-Poincare invariant and is easily generalized to scattering in the presence of a D-brane.