151225 20251017144642.0 doi 10.1103/PhysRevD.111.043021 sideral 143019 ART-2025-143019 eng Arias-Aragón, Fernando Axion-induced pair production: A new strategy for axion detection 2025 Access copy available to the general public Unrestricted We revisit and update the axion-induced pair production process in a nuclear electric field mediated by the axion-electron coupling, a+XZA→XZA+e++e−. This process emerges as one of the most efficient channels for detecting axions with energies above a few MeV in large underground detectors. It is particularly relevant for detecting axions produced in nuclear reactions, such as the p+d→He3+a(5.5  MeV) reaction in the solar pp-chain, and for axions originating in supernovae. Despite recent interest in detecting high-energy axions, the pair production process has received limited attention, even in scenarios where it is the dominant detection channel. This study fills this gap by demonstrating that pair production is a highly effective detection mechanism for high-energy axions. We apply our results to axions from supernovae and the solar 5.5 MeV line, recasting the current bounds of Borexino and comparing the detection capabilities of the JUNO and Hyper-Kamiokande detectors. info:eu-repo/grantAgreement/EUR/ERC-2017-AdG-788781 info:eu-repo/grantAgreement/ES/MICINN/PGC2022-126078NB-C21 info:eu-repo/grantAgreement/ES/MICINN/PID2019-108122GB-C31 info:eu-repo/semantics/openAccess by https://creativecommons.org/licenses/by/4.0/deed.es info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Giannotti, Maurizio Universidad de Zaragoza (orcid)0000-0001-9823-6262 Grilli di Cortona, Giovanni Mescia, Federico 2004 038 Universidad de Zaragoza Dpto. Física Teórica Área Astronomía y Astrofísica 111, 4 (2025), 043021 [13 pp.] Phys. rev. D Physical Review D 2470-0010 1387435 http://zaguan.unizar.es/record/151225/files/texto_completo.pdf Versión publicada 2831289 http://zaguan.unizar.es/record/151225/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:151225 articulos driver 2025-10-17-14:32:33 ARTICLE