5 papers
Hadronic form factors in QCD and the incompleteness problem in the time-like region
Enrique Ruiz Arriola, Pablo Sanchez-Puertas, Wojciech Broniowski
Hadronic form factors fulfill dispersion relations and superconvergence sum rules for their spectral density as genuine imprints of QCD. We show several instances where these condi…
Pseudoscalar meson dominance, the pion-nucleon coupling constant and the Goldberger-Treiman discrepancy
Enrique Ruiz Arriola, Pablo Sanchez-Puertas
We analyze the matrix elements of the pseudoscalar density with pion-quantum numbers in the nucleon in terms of dispersion relations, PCAC and pQCD asympto…
The anomalous magnetic moment of the muon in the Standard Model: an update
R. Aliberti, T. Aoyama, E. Balzani +232
We present the current Standard Model (SM) prediction for the muon anomalous magnetic moment, , updating the first White Paper (WP20) [1]. The pure QED and electroweak contri…
Pion transverse charge density from annihilation data and logarithmic dispersion relations
Enrique Ruiz Arriola, Pablo Sanchez-Puertas, Christian Weiss
The transverse charge density of the pion is extracted from a dispersive analysis of the exclusive annihilation data. A logarithmic dispersion relatio…
The electromagnetic pion form factor and its phase
Pablo Sanchez-Puertas, Enrique Ruiz Arriola
In this work, we employ a dispersion relation that allows to recover the electromagnetic form factor of the pion from its modulus along the unitarity cut. Unlike the standard dispe…