doi:10.22323/1.406.0323engCarmona, J.M.Cortes, J.L.Pereira, L.Relancio, J.J.Reyes, M.A.Vincueria, A.Physics of the universe transparency in a deformed kinematicsART-2022-133554We present a first study of the possible effects of a relativistic deformation of special relativity in the recent observations of very high-energy gamma rays by the LHAASO experiment, which has opened a new phenomenological window to study deformations in the kinematics of special relativity. Our analysis of the interaction of high-energy photons with the CMB background complements theoretical studies based on Lorentz invariance violation scenarios, while making predictions that would allow one to distinguish between a violation and a deformation of the symmetries of special relativity.2022http://zaguan.unizar.es/record/12627210.22323/1.406.0323http://zaguan.unizar.es/record/126272oai:zaguan.unizar.es:126272Pos proceedings of science 323 (2022), [11 pp.]by-nc-ndhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/info:eu-repo/semantics/openAccess