RT Journal Article T1 Present status of the f_0(500) or σ meson A1 Peláez Sagredo, José Ramón AB In this talk I will very briefly comment on the major revision of the σ or f_0(500) meson in the Review of Particle Physics, driven by new data and rigorous dispersive studies. The long debate on the mass, width and very existence of this meson is settled. PB E D P Sciences SN 2100-014X YR 2014 FD 2014 LK https://hdl.handle.net/20.500.14352/35023 UL https://hdl.handle.net/20.500.14352/35023 LA eng NO ©E D P Sciences.International Conference Meson-Nucleon Physics and the Structure of the Nucleon (MENU) (13. 2013. Roma).Let me thank the organizers for nice Conference and their kid invitation. Work supported by the Spanish Research contract FPA2011-27853-C02-02 and the EU FP7 HadronPhysics3 project.HadronPhysics3 project. NO MINECO, Spain NO EU FP7 DS Docta Complutense RD 4 abr 2025