2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/206553We show that the recently constructed higher-derivative 6D SYM theory involves an internal chiral anomaly breaking gauge invariance. The anomaly is cancelled when adding to the theory an adjoint matter hypermultiplet.A missed contribution added. The article is rather essentially reshuffledHigh Energy Physics - Theorytext