8 papers
Poles in scattering from forward dispersion relations and revised total cross-section data
José Ramón Peláez, Pablo Rabán, Jacobo Ruiz de Elvira
We present a model-independent calculation of forward dispersion relations and their analytic continuation to the complex plane, using a revised set of total cross-s…
The unintuitive SU(3) flavor and chiral limits of hadron resonances
José Ramón Peláez, Pablo Rabán, Jacobo Ruiz de Elvira
Contrary to naive expectations, poles used to define hadron resonances rigorously in the physical world may not evolve continuously to become degenerate in the SU(3) and chiral…
Dispersive determination of resonances from scattering data
José Ramón Peláez, Pablo Rabán, Jacobo Ruiz de Elvira
We provide a precise, model- and parametrization-independent dispersive determination of the , , , , , , , a…
Isospin-breaking in the scattering amplitude I: Effects due to the pion mass difference
Gilberto Colangelo, Martina Cottini, Jacobo Ruiz de Elvira
This is the first of a series of papers devoted to a detailed analysis of isospin-breaking effects in the scattering amplitude and the vector form factor of the pion. Isospi…
Nucleon mass: trace anomaly and -terms
Martin Hoferichter, Jacobo Ruiz de Elvira
We give a pedagogical introduction to the origin of the mass of the nucleon. We first review the trace anomaly of the energy-momentum tensor, which generates most of the nucleon ma…
The role of chiral symmetry and the non-ordinary nature in femtoscopic correlations
Miguel Albaladejo, Alejandro Canoa, Juan Nieves +3
We show that the use of realistic interactions, obtained from a dispersive analysis of scattering data, as well as relativistic corrections, are essential to describe recentl…