TY - JOUR AU - Hanhart, Christoph AU - Peláez Sagredo, José Ramón AU - Rios, G. PY - 2008 DO - 10.1103/PhysRevLett.100.152001 SN - 0031-9007 UR - https://hdl.handle.net/20.500.14352/51707 T2 - Physical review letters AB - We use the one-loop chiral perturbation theory π π -scattering amplitude and dispersion theory in the form of the inverse amplitude method to study the quark-mass dependence of the two lightest resonances of the strong interactions, the f_0(600) (σ)... LA - eng PB - American Physical Society KW - Light scalar mesons KW - One-loop KW - Scattering KW - Unitarization KW - Particles KW - Amplitude KW - Universe TI - Quark-mass dependence of the ρ and σ mesons from dispersion relations and chiral perturbation theory TY - journal article VL - 100 ER -