Quantum Chromodynamics, the theory of quarks and gluons, whose interactions can be
described by a local SU (3) gauge symmetry with charges called “color quantum numbers” …

The existence and properties of the sigma meson have been controversial for almost six
decades, despite playing a central role in the spontaneous chiral symmetry of QCD or in the …

A bstract In this third paper of a series dedicated to a dispersive treatment of the hadronic
light-by-light (HLbL) tensor, we derive a partial-wave formulation for two-pion intermediate …

The s-wave meson-nucleon interaction in the S=− 1 sector is studied by means of coupled-
channel Lippmann-Schwinger equations, using the lowest order chiral Lagrangian and a cut …

A nonperturbative method which combines constraints from chiral symmetry breaking and
coupled channel unitarity is used to describe the meson-meson interaction up to about 1.2 …

The most general structure of an elastic partial wave amplitude when the unphysical cuts are
neglected is deduced in terms of the N/D method. This result is then matched to lowest …

The Λ (1405) baryon resonance plays an outstanding role in various aspects in hadron and
nuclear physics. It has been considered that the Λ (1405) resonance is generated by the …

Based on a dispersive approach, we apply the inverse amplitude method to unitarize one-
loop SU (2) and SU (3) chiral perturbation theory. Numerically, we find that this unitarization …

We develop a coupled channel unitary approach describing the behavior at higher energies
of systems whose low-energy dynamics is given by effective O (p 2) and O (p 4) chiral …

A detailed study is presented of elastic WW scattering in the scenario that there are no new
particles discovered prior to the commissioning of the CERN LHC. We work within the …