The emission of soft-photons and the LBK theorem, revisited

Autor:	Balsach, Roger, Bonocore, Domenico, Kulesza, Anna
Rok vydání:	2024
Předmět:	High Energy Physics - Phenomenology
Druh dokumentu:	Working Paper
Popis:	Predictions for processes involving soft photons, up to next-to-leading power (NLP) in the photon energy, can be obtained using the Low-Burnett-Kroll (LBK) theorem. The consistency of the theorem has been a recent topic of investigation since it is traditionally formulated in terms of a non-radiative amplitude, which is evaluated with unphysical momenta. We address such questions and propose a formulation of the LBK theorem which relies on the evaluation of the non-radiative amplitude with on-shell, physical momenta. We use this form to numerically study the impact of NLP contributions to cross-sections for $pp$ and $e^-e^+$ processes involving soft-photon emission. Comment: 7 pages, 4 figures, MTTD23 proceedings
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2401.01820 Zobrazit plný text záznamu View this record from Arxiv