418 citations · 452 across the 5 of their papers we have counts for
5 papers
Properties and composition of the resonance
J. R. Pelaez, J. Nebreda, G. Ríos +1
In this talk we review our recent developments on the understanding of the nature of the f_0(500) resonance---or sigma meson---coming from the N_c expansion, dispersion relations w…
Scalar susceptibilities and four-quark condensates in the meson gas within Chiral Perturbation Theory
A. Gomez Nicola, J. R. Pelaez, J. Ruiz de Elvira
We analyze the properties of four-quark condensates and scalar susceptibilities in the meson gas, within finite temperature Chiral Perturbation Theory (ChPT). The breaking of the f…
Precise dispersive determination of the f0(600) and f0(980) resonances
Jose R. Pelaez, R. Garcia Martin, R. Kaminski +1
We review our recent dispersive and model independent determination of the lightest two scalars, in terms of poles and residues - or mass, width and coupling- by means of once and…
Recent developments in U(3) ChPT: meson-meson scattering and finite energy sum rules
Zhi-Hui Guo, J. A. Oller, J. Ruiz de Elvira
We discuss the meson-meson scattering and finite energy sum rule(FESR), based on the one-loop calculation within U(3) chiral perturbation theory. First we obtain the pertinent reso…
The pion-pion scattering amplitude. IV: Improved analysis with once subtracted Roy-like equations up to 1100 MeV
R. García- Martín, R. Kamiński, J. R. Peláez +2
We improve our description of pion-pion scattering data by imposing additional requirements to our previous fits, in the form of once-subtracted Roy-like equations, while extending…