Spinning amplitudes from scalar amplitudes
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 J exchange. We verify the results by computing angular distributions in 3 + 1 dimensions using various identities involving Jacobi polynomials.
- Publication:
-
Journal of High Energy Physics
- Pub Date:
- November 2021
- DOI:
- 10.1007/JHEP11(2021)151
- arXiv:
- arXiv:2106.05301
- Bibcode:
- 2021JHEP...11..151B
- Keywords:
-
- Scattering Amplitudes;
- Field Theories in Higher Dimensions;
- Higher Spin Gravity;
- High Energy Physics - Theory
- E-Print:
- Textual improvements, updated bibliography. Version to appear in JHEP