Speaker
Dr
Craig Roberts
(Argonne)
Description
Modern facilities are poised to tackle fundamental questions within the Standard Model, aiming to reveal the nature of confinement, its relationship to dynamical chiral symmetry breaking (DCSB) - the origin of visible mass - and the connection between these two, key emergent phenomena. There is strong evidence to suggest that they are intimately connected with the appearance of momentum-dependent masses for gluons and quarks in QCD, which are large in the infrared: mg∼500MeV and Mq∼350MeV. They are also expressed with particular force in the partonic structure of hadrons, e.g. in valence-quark parton distribution amplitudes and functions, and, consequently, in hadron elastic and transition form factors. This presentation will explain that we are now in a position to exhibit the consequences of confinement and DCSB in such observables, opening the way to empirical verification of their expression in the Standard Model.
Primary author
Dr
Craig Roberts
(Argonne)
