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

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Bibliographic Details
Main Authors:	Balsach, Roger, Bonocore, Domenico, Kulesza, Anna
Format:	Preprint
Published:	2024
Subjects:	High Energy Physics - Phenomenology
Online Access:	Acceder al recurso
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author	Balsach, Roger Bonocore, Domenico Kulesza, Anna
author_facet	Balsach, Roger Bonocore, Domenico Kulesza, Anna
contents	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.
format	Preprint
id	arxiv_https___arxiv_org_abs_2401_01820
institution	arXiv
publishDate	2024
record_format	arxiv
spellingShingle	The emission of soft-photons and the LBK theorem, revisited Balsach, Roger Bonocore, Domenico Kulesza, Anna High Energy Physics - Phenomenology 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.
title	The emission of soft-photons and the LBK theorem, revisited
topic	High Energy Physics - Phenomenology
url	https://arxiv.org/abs/2401.01820

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