RT Book, Section T1 Unitarized Chiral Perturbation Theory and the meson spectrum A1 Peláez Sagredo, José Ramón A1 Hanhart, C. A1 Nebreda Manjón, Jenifer A1 Rios, G. AB In this talk we briefly review how the unitarization of Chiral Perturbation Theory with dispersion relations can successfully describe the meson- meson scattering data and generate light resonances, whose mass, width and nature can be related to QCD parameters like quark masses and the number of colors. PB American Institute of Physics SN 978-0-7354-0807-4 YR 2010 FD 2010 LK https://hdl.handle.net/20.500.14352/45623 UL https://hdl.handle.net/20.500.14352/45623 LA eng NO ©2010Amer Inst Physics.International Conference on Hadron Spectroscopy. (13. 2009. Tallahassee, Florida).J.R.P. thanks the organizers of Hadron2009 for the invitation and for their work to create such a pleasant but exciting conference. Work partially supported by Spanish Ministerio de Educación y Ciencia contracts: FPA2007-29115- E, FPA2008-00592 and FIS2006-03438, U.Complutense/Banco Santander grant PR34/07-15875-BSCH and UCMBSCH GR58/08 910309 and the European Community-Research Infrastructure Integrating Activity “Study of Strongly Interacting Matter” (HadronPhysics2, Grant Agreement n. 227431) under the Seventh Framework Programme of EU. NO Spanish Ministerio de Educación y Ciencia NO U.Complutense/Banco Santander NO European Community-Research Infrastructure Integrating Activity Study of Strongly Interacting Matter (HadronPhysics2) DS Docta Complutense RD 25 abr 2025