Spinning amplitudes from scalar amplitudes
High Energy Physics - Theory
2021-11-23 v2
Abstract
We provide a systematic method to compute tree-level scattering amplitudes with spinning external states from amplitudes with scalar external states in arbitrary spacetime dimensions. We write down analytic answers for various scattering amplitudes, including the four graviton amplitude due to the massive spin exchange. We verify the results by computing angular distributions in 3 + 1 dimensions using various identities involving Jacobi polynomials.
Keywords
Cite
@article{arxiv.2106.05301,
title = {Spinning amplitudes from scalar amplitudes},
author = {Mahesh KN Balasubramanian and Raj Patil and Arnab Rudra},
journal= {arXiv preprint arXiv:2106.05301},
year = {2021}
}
Comments
Textual improvements, updated bibliography. Version to appear in JHEP