Year: 2019
Type: article
Abstract: We introduce a BCFW shift that can be used to recursively build the full YangMills tree-level amplitude as a function of polarization vectors. Furthermore, in line with the recent results of [1], we conjecture that the Yang-Mills tree-level scattering amplitude is uniquely fixed by locality and demanding the usual asymptotic behavior under a sufficient number of shifts. Unitarity therefore emerges from locality and constructability. We prove this statement at the leading order in the soft expansion.
Source: Journal of High Energy Physics
Author: Laurentiu Rodina
Institution: Princeton University
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W2972973455