Autor:	Lai, Hsing-Yi, Liu, Da, Terning, John
Rok vydání:	2023
Předmět:	High Energy Physics - Phenomenology High Energy Physics - Theory
Druh dokumentu:	Working Paper
Popis:	The constructive method of determining amplitudes from on-shell pole structure has been shown to be promising for calculating amplitudes in a more efficient way. However, challenges have been encountered when a massless internal photon is involved in the gluing of three-point amplitudes with massive external particles. In this paper, we use the original on-shell method, old-fashioned perturbation theory, to shed light on the constructive method, and show that one can derive the Feynman amplitude by correctly identifying the residue even when there is an internal photon involved. Comment: 16 pages
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2312.11621 Zobrazit plný text záznamu View this record from Arxiv