325 citations · 6k across the 224 of their papers we have counts for
12 papers · 2 filters
Correlations between perturbation theory and power corrections in QCD at zero and finite temperature
E. Megias, E. Ruiz Arriola, L. L. Salcedo
The duality between QCD perturbative series and power corrections recently conjectured by Narison and Zakharov is analyzed. We propose to study correlations between both contributi…
Pion wave function from lattice QCD vs. chiral quark models
Wojciech Broniowski, Sasa Prelovsek, Luka Santelj +1
We analyze the equal-time Bethe-Salpeter quark wave function of the pion obtained from a quenched lattice QCD calculation with delocalized quark interpolators. We find that the res…
Couplings in coupled channels versus wave functions: application to the X(3872) resonance
D. Gamermann, J. Nieves, E. Oset +1
We perform an analytical study of the scattering matrix and bound states in problems with many physical coupled channels. We establish the relationship of the couplings of the stat…
Gravitational, electromagnetic, and transition form factors of the pion
Wojciech Broniowski, Enrique Ruiz Arriola
Results of the Spectral Quark Model for the gravitational, electromagnetic, and transition form factors of the pion are discussed. In this model both the parton distribution amplit…
Renormalization and Universality of NN interactions in Chiral Quark and Soliton Models
E. Ruiz Arriola, A. Calle Cordon
We use renormalization as a tool to extract universal features of the NN interaction in quark and soliton nucleon models, having the same long distance behaviour but different shor…
Application of chiral quarks to high-energy processes and lattice QCD
Wojciech Broniowski, Enrique Ruiz Arriola
Results of the chiral quark models for the soft matrix elements involving pions and photons, relevant for high-energy processes, are reviewed. We discuss quantities related to the…
Photon interactions and chiral dynamics
Wojciech Broniowski, Alexandr E. Dorokhov, Enrique Ruiz Arriola
Twist-2 components of the real and virtual photon distribution amplitudes are evaluated in several chiral quark models. The results, obtained at the quark model scale, are then evo…
Meson Resonances at large Nc: Complex Poles vs Breit-Wigner Masses
J. Nieves, E. Ruiz Arriola
The rigorous quantum mechanical definition of a resonance requires determining the pole position in the second Riemann sheet of the analytically continued partial wave scattering a…
Properties of the rho and sigma Mesons from Unitary Chiral Dynamics
J. Nieves, E. Ruiz Arriola
The chiral limit of the rho and sigma masses and widths is discussed. We work within the inverse amplitude method to one loop in SU(2) ChPT and analyze the consequences that all ch…
From chiral quark models to high-energy processes
Wojciech Broniowski, Enrique Ruiz Arriola
We show the results of low-energy chiral quark models for soft matrix elements involving pions and photons. Such soft elements, upon convolution with the hard matrix elements, are…
Trace Anomaly, Thermal Power Corrections and Dimension Two condensates in the deconfined phase
E. Megias, E. Ruiz Arriola, L. L. Salcedo
The trace anomaly of gluodynamics on the lattice shows clear fingerprints of a dimension two condensate above the phase transition. The condensate manifests itself through even pow…
A note on the QCD evolution of generalized form factors
Wojciech Broniowski, Enrique Ruiz Arriola
Generalized form factors of hadrons are objects appearing in moments of the generalized parton distributions. Their leading-order DGLAP-ERBL QCD evolution is exceedingly simple and…