There are two mass generating mechanisms in the standard model of particle physics (SM).
One is related to the Higgs boson and fairly well understood. The other is embedded in …

Since the parton model was introduced by Feynman more than 50 years ago, much has
been learned about the partonic structure of the proton through a large body of high-energy …

We present a detailed analysis of e+ e−→ π+ π− data up to s= 1 GeV in the framework of
dispersion relations. Starting from a family of ππ P-wave phase shifts, as derived from a …

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 …

We present a systematic analysis in perturbative quantum chromodynamics (QCD) of large-
momentum-transfer exclusive processes. Predictions are given for the scaling behavior …

PII: 0370-2693(80)90869-2 Page 1 Volume 94B, number 2 PHYSICS LETTERS 28 July 1980
FACTORIZATION AND ASYMPTOTIC BEHAVIOUR OF PION FORM FACTOR IN QCD AV …

Applications of perturbative QCD to deeply virtual Compton scattering and hard exclusive
electroproduction processes require a generalization of usual parton distributions for the …

The questions of how the bulk of the Universe's visible mass emerges and how it is manifest
in the existence and properties of hadrons are profound, and probe the heart of strongly …

The generalized parton distributions, introduced nearly a decade ago, have emerged as a
universal tool to describe hadrons in terms of quark and gluonic degrees of freedom. They …

The main ideas, methods and results in the investigation of the asymptotic behaviour of
exclusive processes are reviewed. We discuss power behaviour and its dependence on …