Effective ALP-Photon Coupling in External Magnetic Fields

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Bibliographic Details
Main Author:	Semin, Ozan
Format:	Preprint
Published:	2025
Subjects:	High Energy Physics - Phenomenology High Energy Physics - Theory
Online Access:	Acceder al recurso
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author	Semin, Ozan
author_facet	Semin, Ozan
contents	We presented a complete calculation of the one-loop fermionic correction to the effective coupling between axion-like particles (ALPs) and photons within a constant, homogeneous magnetic field of arbitrary strength. This interaction, responsible for the Primakoff effect, is central to detecting axion-like particles in astrophysical settings and terrestrial experiments like helioscopes and haloscopes. Accurately predicting the interaction rate requires accounting for quantum corrections. Our work tackles this by employing magnetically field-dressed fermion propagators derived using Schwinger's proper time method and a systematic Lorentz decomposition using the Ritus basis. We evaluate the triangle loop diagram exactly, and compare it to approximations on field strength under specific assumptions.
format	Preprint
id	arxiv_https___arxiv_org_abs_2505_05247
institution	arXiv
publishDate	2025
record_format	arxiv
spellingShingle	Effective ALP-Photon Coupling in External Magnetic Fields Semin, Ozan High Energy Physics - Phenomenology High Energy Physics - Theory We presented a complete calculation of the one-loop fermionic correction to the effective coupling between axion-like particles (ALPs) and photons within a constant, homogeneous magnetic field of arbitrary strength. This interaction, responsible for the Primakoff effect, is central to detecting axion-like particles in astrophysical settings and terrestrial experiments like helioscopes and haloscopes. Accurately predicting the interaction rate requires accounting for quantum corrections. Our work tackles this by employing magnetically field-dressed fermion propagators derived using Schwinger's proper time method and a systematic Lorentz decomposition using the Ritus basis. We evaluate the triangle loop diagram exactly, and compare it to approximations on field strength under specific assumptions.
title	Effective ALP-Photon Coupling in External Magnetic Fields
topic	High Energy Physics - Phenomenology High Energy Physics - Theory
url	https://arxiv.org/abs/2505.05247

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