Resumen: Lorentz symmetry forbids decays of massive spin-1 particle like the Z0 into two massless photons, a result known as the Landau-Yang theorem. But it is known that infrared effects can break Lorentz invariance. Employing the construction of Mund et al. [1] which incorporated this Lorentz violation, we propose an interaction leading to the decay Z0→ 2γ and study the dependence of the decay on the parameter of this Lorentz violation. Idioma: Inglés DOI: 10.1007/JHEP10(2023)028 Año: 2023 Publicado en: Journal of High Energy Physics 2023, 10 (2023), [9 pp.] ISSN: 1126-6708 Financiación: info:eu-repo/grantAgreement/ES/DGA-FSE/E21-17R Financiación: info:eu-repo/grantAgreement/ES/MICINN/PGC2022-126078NB-C21 Tipo y forma: Artículo (Versión definitiva) Área (Departamento): Área Física Teórica (Dpto. Física Teórica)